{"id":"f66f8d3c-8598-4b4b-9417-0c57894928cb","created_at":"2025-09-04T14:43:15.036Z","updated_at":"2026-01-20T21:03:51.738Z","owner_id":"c4678375-5225-458c-b42f-15157046d480","location_id":"06c6f601-1ebd-4cf5-ad21-4f4985a139dc","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2018-08-02T04:00:00.000Z","observed_at_local":"2018-08-02T00:00:00-04:00","notes":null,"checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["calcium","total_phosphorus","total_kjeldahl_nitrogen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/167049","readings":[{"id":"5011a907-4eb1-4c0e-94b2-c8e2bf5241e7","created_at":"2025-09-04T14:43:15.188Z","updated_at":"2025-09-04T14:43:15.188Z","parameter":"calcium","unit":"mg_l","value":"29.2","equipment":"unspecified_calcium","equipment_limit":null},{"id":"8470194e-e6e2-4c36-a1b5-80fe2f961832","created_at":"2025-09-04T14:43:15.197Z","updated_at":"2025-09-04T14:43:15.197Z","parameter":"total_phosphorus","unit":"ppb","value":"0.02","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"3648ab9a-a6be-4350-a498-15cf997abc8f","created_at":"2025-09-04T14:43:15.218Z","updated_at":"2025-09-04T14:43:15.218Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"0.67","equipment":"lab_unspecified","equipment_limit":null}]}