{"id":"4d76925c-d4ee-4b9a-933c-0aa6bc5109e4","created_at":"2025-09-04T14:38:09.218Z","updated_at":"2026-01-20T21:01:26.511Z","owner_id":"c4678375-5225-458c-b42f-15157046d480","location_id":"a91e34b2-b3fd-4462-a7c6-0d43ba843e2a","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2016-07-25T16:00:00.000Z","observed_at_local":"2016-07-25T12:00:00-04:00","notes":"Calcium: 23.6\r\nSample: B16-21898-1","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/166255","readings":[{"id":"4644901f-0988-4730-980c-a57dfb016c07","created_at":"2025-09-04T14:38:09.327Z","updated_at":"2025-09-04T14:38:09.327Z","parameter":"total_phosphorus","unit":"ppb","value":"11","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"a02f052e-bb82-4f70-9150-368041389a5b","created_at":"2025-09-04T14:38:09.348Z","updated_at":"2025-09-04T14:38:09.348Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"400","equipment":"lab_unspecified","equipment_limit":null}]}