{"id":"3c1968d1-1561-45b7-bb08-396e1ca45ec1","created_at":"2025-09-04T00:25:34.768Z","updated_at":"2026-01-21T16:01:49.457Z","owner_id":"a95b75b3-88b1-432f-a99a-21d3fc73c724","location_id":"55b91b17-e26c-4843-b5ac-428d9ee88fee","dataset_id":"941b579f-21de-4723-af1c-f682886b0c51","form_id":"2ef98bee-de4c-4213-940f-84177fe7091d","observed_at":"2019-07-29T19:30:00.000Z","observed_at_local":"2019-07-29T13:30:00-06:00","notes":"","checked":"review_needed","qa_notes":"Review needed: Based on previous readings, oxygen's result of 4mg/L is outside the expected range of 5.46-6.34mg/L.","qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","oxygen","hardness","alkalinity","conductivity","air_temperature","water_temperature"],"photos":[],"permalink":"https://data.waterrangers.com/observations/145356","readings":[{"id":"4da07d6c-c1c7-456a-b2b0-bd7233980892","created_at":"2025-09-04T00:25:34.794Z","updated_at":"2025-09-04T00:25:34.794Z","parameter":"ph","unit":"std_units","value":"8.4","equipment":"unspecified_ph","equipment_limit":null},{"id":"8623792e-86a9-49c1-8ec0-4aec6566e0ba","created_at":"2025-09-04T00:25:34.798Z","updated_at":"2025-09-04T00:25:34.798Z","parameter":"oxygen","unit":"mg_l","value":"4","equipment":"chemetrics_dissolved_oxygen_mg_l","equipment_limit":null},{"id":"dbb01364-8900-4d46-84e3-31490c95c2e7","created_at":"2025-09-04T00:25:34.946Z","updated_at":"2025-09-04T00:25:34.946Z","parameter":"hardness","unit":"ppm","value":"300","equipment":"water_rangers_freshwater_teststrips_hardness","equipment_limit":null},{"id":"d47399f9-20c7-41e2-a0f7-32f1f8426730","created_at":"2025-09-04T00:25:34.952Z","updated_at":"2025-09-04T00:25:34.952Z","parameter":"alkalinity","unit":"ppm","value":"190","equipment":"water_rangers_freshwater_teststrips_alkalinity","equipment_limit":null},{"id":"2251a8e8-1cce-4536-827d-2e5851ac7e6b","created_at":"2025-09-04T00:25:34.975Z","updated_at":"2025-09-04T00:25:34.975Z","parameter":"conductivity","unit":"us_cm","value":"1033","equipment":"water_rangers_pen_type_conductivity_meter_low_range","equipment_limit":null},{"id":"d4455e89-1385-48e7-a7c8-228527dac07a","created_at":"2025-09-04T00:25:35.028Z","updated_at":"2025-09-04T00:25:35.028Z","parameter":"air_temperature","unit":"deg_c","value":"26","equipment":"stream_thermometer_water_rangers","equipment_limit":null},{"id":"c835e572-9f0e-4cec-bd31-29ca9460980a","created_at":"2025-09-04T00:25:35.037Z","updated_at":"2025-09-04T00:25:35.037Z","parameter":"water_temperature","unit":"deg_c","value":"23","equipment":"water_rangers_pen_type_temperature_meter","equipment_limit":null}]}