{"id":"561a5c74-39a6-4e75-9381-8cf433b24f77","created_at":"2025-09-04T14:35:58.130Z","updated_at":"2026-01-20T20:59:17.877Z","owner_id":"c4678375-5225-458c-b42f-15157046d480","location_id":"64337401-0079-4e1b-8868-37e30cf376a2","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2016-08-10T16:00:00.000Z","observed_at_local":"2016-08-10T12:00:00-04:00","notes":"Calcium: 22.7\r\nSample: B16-23721-1","checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["total_phosphorus","total_kjeldahl_nitrogen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/165576","readings":[{"id":"3a9c1ceb-1f3a-4ee9-90ef-7294233a1007","created_at":"2025-09-04T14:35:58.174Z","updated_at":"2025-09-04T14:35:58.174Z","parameter":"total_phosphorus","unit":"ppb","value":"12","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"30d4485e-5435-4cc8-8732-c3976dcc7d29","created_at":"2025-09-04T14:35:58.182Z","updated_at":"2025-09-04T14:35:58.182Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"400","equipment":"lab_unspecified","equipment_limit":null}]}