{"id":"359018bf-646d-43a7-bf77-e6d7dfcc30fc","created_at":"2025-09-04T01:00:17.656Z","updated_at":"2026-01-12T18:39:33.618Z","owner_id":"2ddefab1-bc31-4f94-83ea-196f8ee3a81e","location_id":"8a9680f5-f957-4696-8b12-c723eb701dc2","dataset_id":"d179cd58-68cf-460f-82e3-3501a5e6993a","form_id":"4ae1c4dc-aad5-4eaf-ace4-98824c6f92cb","observed_at":"2017-07-24T16:00:00.000Z","observed_at_local":"2017-07-24T12:00:00-04:00","notes":"Phosphorus, Calcium and Secchi disc measured only. Weather was sunny, 21 degrees Celsius and lake was calm.","checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["calcium","secchi_depth","air_temperature","total_phosphorus"],"photos":[],"permalink":"https://data.waterrangers.com/observations/157589","readings":[{"id":"f7cba0ac-98a8-4e9d-951d-f740ec5d0110","created_at":"2025-09-04T01:00:17.694Z","updated_at":"2025-09-04T01:00:17.694Z","parameter":"calcium","unit":"mg_l","value":"1.6","equipment":"unspecified_calcium","equipment_limit":null},{"id":"c19ad51b-b5bd-471c-ac48-107a86ecfec1","created_at":"2025-09-04T01:00:17.702Z","updated_at":"2025-09-04T01:00:17.702Z","parameter":"secchi_depth","unit":"m","value":"6","equipment":"secchi_disk_20cm","equipment_limit":null},{"id":"b4fffe4f-aaab-48d2-864f-fe333da1d8dd","created_at":"2025-09-04T01:00:17.710Z","updated_at":"2025-09-04T01:00:17.710Z","parameter":"air_temperature","unit":"deg_c","value":"21","equipment":"unspecified_air_temperature","equipment_limit":null},{"id":"33c9f13e-86e0-4d9d-ace9-b4347afe568e","created_at":"2025-09-04T01:00:17.722Z","updated_at":"2025-09-04T01:00:17.722Z","parameter":"total_phosphorus","unit":"ppb","value":"3.8","equipment":"unspecified_total_phosphorus","equipment_limit":null}]}