{
  "data": [
    {
      "date": "2020-01-01",
      "region": "Alberta",
      "quantity_mt": 11941000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jan 2020; raw 11,940,538.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-02-01",
      "region": "Alberta",
      "quantity_mt": 11993000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Feb 2020; raw 11,993,123.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-03-01",
      "region": "Alberta",
      "quantity_mt": 12005000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Mar 2020; raw 12,005,185.8 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-04-01",
      "region": "Alberta",
      "quantity_mt": 12008000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Apr 2020; raw 12,008,261.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-05-01",
      "region": "Alberta",
      "quantity_mt": 12015000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for May 2020; raw 12,015,485.8 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-06-01",
      "region": "Alberta",
      "quantity_mt": 11996000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jun 2020; raw 11,995,906.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-07-01",
      "region": "Alberta",
      "quantity_mt": 11974000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jul 2020; raw 11,974,196.2 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-08-01",
      "region": "Alberta",
      "quantity_mt": 11959000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Aug 2020; raw 11,959,246.1 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-09-01",
      "region": "Alberta",
      "quantity_mt": 11965000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Sep 2020; raw 11,964,624.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-10-01",
      "region": "Alberta",
      "quantity_mt": 11966000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Oct 2020; raw 11,965,615.2 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-11-01",
      "region": "Alberta",
      "quantity_mt": 12002000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Nov 2020; raw 12,001,785.1 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2020-12-01",
      "region": "Alberta",
      "quantity_mt": 12067000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2020 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/Sulphur_2020.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Dec 2020; raw 12,067,195.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-01-01",
      "region": "Alberta",
      "quantity_mt": 12077000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jan 2021; raw 12,077,152.2 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-02-01",
      "region": "Alberta",
      "quantity_mt": 12119000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Feb 2021; raw 12,119,335.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-03-01",
      "region": "Alberta",
      "quantity_mt": 12125000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Mar 2021; raw 12,124,684.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-04-01",
      "region": "Alberta",
      "quantity_mt": 12123000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Apr 2021; raw 12,122,609.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-05-01",
      "region": "Alberta",
      "quantity_mt": 12118000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for May 2021; raw 12,117,930.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-06-01",
      "region": "Alberta",
      "quantity_mt": 12143000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jun 2021; raw 12,143,211.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-07-01",
      "region": "Alberta",
      "quantity_mt": 12184000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jul 2021; raw 12,184,308.8 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-08-01",
      "region": "Alberta",
      "quantity_mt": 12227000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Aug 2021; raw 12,227,392.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-09-01",
      "region": "Alberta",
      "quantity_mt": 12231000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Sep 2021; raw 12,231,003.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-10-01",
      "region": "Alberta",
      "quantity_mt": 12258000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Oct 2021; raw 12,257,697.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-11-01",
      "region": "Alberta",
      "quantity_mt": 12257000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Nov 2021; raw 12,257,041.7 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2021-12-01",
      "region": "Alberta",
      "quantity_mt": 12309000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2021 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2021-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Dec 2021; raw 12,309,487.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-01-01",
      "region": "Alberta",
      "quantity_mt": 12312000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jan 2022; raw 12,312,161.2 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-02-01",
      "region": "Alberta",
      "quantity_mt": 12348000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Feb 2022; raw 12,347,822.6 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-03-01",
      "region": "Alberta",
      "quantity_mt": 12305000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Mar 2022; raw 12,304,825.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-04-01",
      "region": "Alberta",
      "quantity_mt": 12268000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Apr 2022; raw 12,268,293.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-05-01",
      "region": "Alberta",
      "quantity_mt": 12230000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for May 2022; raw 12,230,282.1 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-06-01",
      "region": "Alberta",
      "quantity_mt": 12230000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jun 2022; raw 12,230,005.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-07-01",
      "region": "Alberta",
      "quantity_mt": 12238000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jul 2022; raw 12,238,101.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-08-01",
      "region": "Alberta",
      "quantity_mt": 12188000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Aug 2022; raw 12,187,733.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-09-01",
      "region": "Alberta",
      "quantity_mt": 12181000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Sep 2022; raw 12,181,220.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-10-01",
      "region": "Alberta",
      "quantity_mt": 12159000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Oct 2022; raw 12,158,828.9 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-11-01",
      "region": "Alberta",
      "quantity_mt": 12187000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Nov 2022; raw 12,187,000.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2022-12-01",
      "region": "Alberta",
      "quantity_mt": 12208000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2022 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2022-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Dec 2022; raw 12,207,568.2 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-01-01",
      "region": "Alberta",
      "quantity_mt": 12205000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jan 2023; raw 12,205,045.1 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-02-01",
      "region": "Alberta",
      "quantity_mt": 12209000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Feb 2023; raw 12,208,905.7 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-03-01",
      "region": "Alberta",
      "quantity_mt": 12195000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Mar 2023; raw 12,195,385.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-04-01",
      "region": "Alberta",
      "quantity_mt": 12154000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Apr 2023; raw 12,153,887.6 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-05-01",
      "region": "Alberta",
      "quantity_mt": 12114000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for May 2023; raw 12,113,650.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-06-01",
      "region": "Alberta",
      "quantity_mt": 12119000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jun 2023; raw 12,118,520.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-07-01",
      "region": "Alberta",
      "quantity_mt": 12187000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jul 2023; raw 12,187,468.3 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-08-01",
      "region": "Alberta",
      "quantity_mt": 12166000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Aug 2023; raw 12,165,511.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-09-01",
      "region": "Alberta",
      "quantity_mt": 12129000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Sep 2023; raw 12,129,402.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-10-01",
      "region": "Alberta",
      "quantity_mt": 12108000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Oct 2023; raw 12,108,119.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-11-01",
      "region": "Alberta",
      "quantity_mt": 12091000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Nov 2023; raw 12,090,629.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2023-12-01",
      "region": "Alberta",
      "quantity_mt": 12077000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2023 annual file)",
      "source_url": "https://www.aer.ca/documents/sts/st3/ST3_2023-12_Sulphur.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Dec 2023; raw 12,076,530.0 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-01-01",
      "region": "Alberta",
      "quantity_mt": 12089000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jan 2024; raw 12,088,750.8 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-02-01",
      "region": "Alberta",
      "quantity_mt": 12134000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Feb 2024; raw 12,134,449.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-03-01",
      "region": "Alberta",
      "quantity_mt": 12135000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Mar 2024; raw 12,135,433.7 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-04-01",
      "region": "Alberta",
      "quantity_mt": 12106000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Apr 2024; raw 12,105,973.8 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-05-01",
      "region": "Alberta",
      "quantity_mt": 12068000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for May 2024; raw 12,067,908.5 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-06-01",
      "region": "Alberta",
      "quantity_mt": 12033000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jun 2024; raw 12,032,612.7 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-07-01",
      "region": "Alberta",
      "quantity_mt": 12038000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Jul 2024; raw 12,037,643.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-08-01",
      "region": "Alberta",
      "quantity_mt": 12054000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Aug 2024; raw 12,054,421.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-09-01",
      "region": "Alberta",
      "quantity_mt": 11968000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Sep 2024; raw 11,967,942.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-10-01",
      "region": "Alberta",
      "quantity_mt": 11993000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Oct 2024; raw 11,993,300.1 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-11-01",
      "region": "Alberta",
      "quantity_mt": 11996000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Nov 2024; raw 11,996,483.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2024-12-01",
      "region": "Alberta",
      "quantity_mt": 11987000,
      "data_type": "verified_public",
      "source": "AER ST3 Supply and Disposition of Sulphur (2024 annual file)",
      "source_url": "https://www.aer.ca/2025-02/ST3_Sulphur_2024.xlsx",
      "note": "Province-wide AER closing inventory (INVCL) for Dec 2024; raw 11,987,148.4 tonnes. Index: https://www.aer.ca/data-and-performance-reports/statistical-reports/st3",
      "series": "aer_st3",
      "observation_class": "reported",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-01-01",
      "region": "Alberta",
      "quantity_mt": 11985203,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-02-01",
      "region": "Alberta",
      "quantity_mt": 11929506,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-03-01",
      "region": "Alberta",
      "quantity_mt": 11879198,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-04-01",
      "region": "Alberta",
      "quantity_mt": 11823500,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-05-01",
      "region": "Alberta",
      "quantity_mt": 11769599,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-06-01",
      "region": "Alberta",
      "quantity_mt": 11713901,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2024-12-31 and 2025-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-07-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "verified_public",
      "source": "AER data via Argus Media",
      "source_url": "https://www.argusmedia.com/en/news-and-insights/latest-market-news/2731279-alberta-sulfur-inventories-fall-as-exports-climb",
      "note": "Closing stock 11.66 Mt; −377 kt (−3%) YoY; lowest since May 2019; Argus 12 Sep 2025",
      "series": "canonical_anchor",
      "observation_class": "reported_print",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-08-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-09-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-10-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-11-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2025-12-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-01-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-02-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-03-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-04-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-05-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-06-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Interpolated between 2025-07-01 and 2026-07-01 public anchors",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    },
    {
      "date": "2026-07-01",
      "region": "Alberta",
      "quantity_mt": 11660000,
      "data_type": "platform_estimate",
      "source": "Sulfur Wire platform estimate",
      "note": "Held flat from last province-wide print 2025-07-01 (11,660,000 t). No new AER ST3 month in window; not a facility-level Syncrude figure.",
      "series": "monthly_densified",
      "observation_class": "interpolated",
      "ingested_at": "2026-07-21T17:28:56.234Z"
    }
  ]
}