{"access":"sample","sample":true,"sample_size":12,"observations_total":86,"signal":"illinois-dry-fall-anhydrous-ammonia-window-2026","key":"il-uan28-usd-st","family":"ECONOMIC","variable":"Liquid nitrogen 28% (UAN28), Illinois statewide distributor offer average, FOB (USDA AMS Illinois Production Cost Report, bi-weekly; labelled '28% spread' to 2022, '28-0-0' in 2026). Archive 2018-12 to 2022-02, then 30 Oct 2026; gap not collected","unit":"US dollars per short ton","geography":"US-IL","publisher":"usda-ams","source_url":"https://esmis.nal.usda.gov/node/681","source_sha256":"ce411b39e150a89192cc7f3ac7efd4dd50f8ca0d8b85e4722a76ac361e865a0c","collected_at":"2026-11-04T17:04:38+01:00","period_grain":"day","derived":null,"rights":"PUBLIC_DOMAIN","publisher_name":"USDA Agricultural Marketing Service","licence":"U.S. federal government work (17 U.S.C. §105). The Grain Transportation Report datasets are described by USDA as non-confidential and not copyrighted; attribution requested.","licence_evidence_url":"https://www.ams.usda.gov/services/transportation-analysis/gtr-datasets","licence_checked_at":"2026-10-23","observations_withheld":false,"observations":[{"period":"2021-10-07","value":450},{"period":"2021-10-21","value":475},{"period":"2021-11-04","value":525.5},{"period":"2021-11-18","value":563},{"period":"2021-12-02","value":563.67},{"period":"2021-12-16","value":557.81},{"period":"2021-12-30","value":579.79},{"period":"2022-01-13","value":574.72},{"period":"2022-01-27","value":574.72},{"period":"2022-02-10","value":577},{"period":"2022-02-24","value":579.63},{"period":"2026-10-30","value":467.86}]}