{"id":"d23fefe6-2e2e-491a-a389-4cd1a73acf4c","created_at":"2025-09-04T14:35:04.643Z","updated_at":"2026-01-20T20:58:30.649Z","owner_id":"c4678375-5225-458c-b42f-15157046d480","location_id":"57771647-63af-4cf8-abb3-0e6d73cc1257","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2016-07-27T16:00:00.000Z","observed_at_local":"2016-07-27T12:00:00-04:00","notes":"Calcium: 15.1\r\nSample: B16-22309-5","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/165307","readings":[{"id":"49bdc7e2-d854-42ce-a90a-885ba11c93f5","created_at":"2025-09-04T14:35:04.714Z","updated_at":"2025-09-04T14:35:04.714Z","parameter":"total_phosphorus","unit":"ppb","value":"13","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"5d23f7dc-4702-49bd-803a-17e21703d822","created_at":"2025-09-04T14:35:04.727Z","updated_at":"2025-09-04T14:35:04.727Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"470","equipment":"lab_unspecified","equipment_limit":null}]}