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07-03T04:00:00.000Z","observed_at_local":"2014-07-03T00:00:00-04:00","notes":null,"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/167149","readings":[{"id":"7c4b30e1-873a-4ab8-aec7-bf44d811e7bc","created_at":"2025-09-04T14:44:31.010Z","updated_at":"2025-09-04T14:44:31.010Z","parameter":"total_phosphorus","unit":"ppb","value":"16","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"468f2f5c-4714-4f8f-a3de-42412b4e72b1","created_at":"2025-09-04T14:44:31.032Z","updated_at":"2025-09-04T14:44:31.032Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"280","equipment":"lab_unspecified","equipment_limit":null}]},{"id":"43779507-cf00-4d75-bc63-14ec7e997889","created_at":"2025-09-04T14:25:58.743Z","updated_at":"2026-01-20T20:44:46.518Z","owner_id":"490685c6-e1c0-4eec-8b00-4b1f833e5581","location_id":"23e91a9f-dcff-4fbc-b418-b727639a0131","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2013-07-23T04:00:00.000Z","observed_at_local":"2013-07-23T00:00:00-04:00","notes":null,"checked":"review_needed","qa_notes":"Review needed: Based on previous readings, oxygen's result of 8.21mg/L is outside the expected range of 8.52-9.24mg/L.","qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","oxygen","air_temperature","total_phosphorus","water_temperature","total_kjeldahl_nitrogen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/161596","readings":[{"id":"ef6ebf9d-f925-4798-af77-5a26a8f14a00","created_at":"2025-09-04T14:25:58.864Z","updated_at":"2025-09-04T14:25:58.864Z","parameter":"ph","unit":"std_units","value":"8.1","equipment":"unspecified_ph","equipment_limit":null},{"id":"428b78b4-32ec-4f98-a911-026a7190f631","created_at":"2025-09-04T14:25:58.874Z","updated_at":"2025-09-04T14:25:58.874Z","parameter":"oxygen","unit":"mg_l","value":"8.21","equipment":"unspecified_oxygen_mg_l","equipment_limit":null},{"id":"cbf9e499-6aad-45c8-bb05-116502871db9","created_at":"2025-09-04T14:25:58.880Z","updated_at":"2025-09-04T14:25:58.880Z","parameter":"air_temperature","unit":"deg_c","value":"27","equipment":"unspecified_air_temperature","equipment_limit":null},{"id":"2dffebf5-b913-49d2-9809-4c80e4dcc3a9","created_at":"2025-09-04T14:25:58.886Z","updated_at":"2025-09-04T14:25:58.886Z","parameter":"total_phosphorus","unit":"ppb","value":"7","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"3534872f-15bb-4da7-a623-f6954a7dae2a","created_at":"2025-09-04T14:25:58.892Z","updated_at":"2025-09-04T14:25:58.892Z","parameter":"water_temperature","unit":"deg_c","value":"25.73","equipment":"unspecified_water_temperature","equipment_limit":null},{"id":"cc536eae-9594-43cd-95af-fa5c9350bbb4","created_at":"2025-09-04T14:25:58.902Z","updated_at":"2025-09-04T14:25:58.902Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"300","equipment":"lab_unspecified","equipment_limit":null}]},{"id":"f71aefce-d07e-4bc0-b1b9-1344cdfe075b","created_at":"2025-09-04T14:25:59.722Z","updated_at":"2026-01-20T20:44:48.735Z","owner_id":"490685c6-e1c0-4eec-8b00-4b1f833e5581","location_id":"23e91a9f-dcff-4fbc-b418-b727639a0131","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2013-06-18T04:00:00.000Z","observed_at_local":"2013-06-18T00:00:00-04:00","notes":null,"checked":"review_needed","qa_notes":"Review needed: Based on previous readings, oxygen's result of 9.44mg/L is outside the expected range of 8.27-9.33mg/L.","qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","oxygen","secchi_depth","air_temperature","total_phosphorus","water_temperature","total_kjeldahl_nitrogen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/161606","readings":[{"id":"87eed2df-c46b-4396-8769-3544dda1b441","created_at":"2025-09-04T14:25:59.764Z","updated_at":"2025-09-04T14:25:59.764Z","parameter":"ph","unit":"std_units","value":"8.15","equipment":"unspecified_ph","equipment_limit":null},{"id":"158fa757-3563-43c3-b141-ebec4dd454a2","created_at":"2025-09-04T14:25:59.774Z","updated_at":"2025-09-04T14:25:59.774Z","parameter":"oxygen","unit":"mg_l","value":"9.44","equipment":"unspecified_oxygen_mg_l","equipment_limit":null},{"id":"83673d59-4b68-407a-99fc-5f17f9b1ab99","created_at":"2025-09-04T14:25:59.783Z","updated_at":"2025-09-04T14:25:59.783Z","parameter":"secchi_depth","unit":"m","value":"5.5","equipment":"secchi_disk_20cm","equipment_limit":null},{"id":"47694491-b09b-4d8a-afd2-f1fd0a5cacbb","created_at":"2025-09-04T14:25:59.815Z","updated_at":"2025-09-04T14:25:59.815Z","parameter":"air_temperature","unit":"deg_c","value":"18","equipment":"unspecified_air_temperature","equipment_limit":null},{"id":"30bb8b8a-db5d-4470-9d95-773c1518b782","created_at":"2025-09-04T14:25:59.822Z","updated_at":"2025-09-04T14:25:59.822Z","parameter":"total_phosphorus","unit":"ppb","value":"5","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"334b73b4-fd11-495b-8e50-c5ef53666c75","created_at":"2025-09-04T14:25:59.834Z","updated_at":"2025-09-04T14:25:59.834Z","parameter":"water_temperature","unit":"deg_c","value":"19.33","equipment":"unspecified_water_temperature","equipment_limit":null},{"id":"1b80ee17-2b19-40b9-82e0-df3d9e6fc86f","created_at":"2025-09-04T14:25:59.848Z","updated_at":"2025-09-04T14:25:59.848Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"280","equipment":"lab_unspecified","equipment_limit":null}]},{"id":"a616a291-5d00-4171-852f-be533d5d8a62","created_at":"2025-09-04T14:25:58.576Z","updated_at":"2026-01-20T20:44:46.177Z","owner_id":"490685c6-e1c0-4eec-8b00-4b1f833e5581","location_id":"23e91a9f-dcff-4fbc-b418-b727639a0131","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2012-08-14T04:00:00.000Z","observed_at_local":"2012-08-14T00:00:00-04:00","notes":null,"checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","oxygen","total_phosphorus","water_temperature","total_kjeldahl_nitrogen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/161595","readings":[{"id":"149c99db-3c4b-48fb-8244-43f34dd572f8","created_at":"2025-09-04T14:25:58.642Z","updated_at":"2025-09-04T14:25:58.642Z","parameter":"ph","unit":"std_units","value":"8.47","equipment":"unspecified_ph","equipment_limit":null},{"id":"69255e07-b5f0-4d87-9396-f55eeff85adf","created_at":"2025-09-04T14:25:58.656Z","updated_at":"2025-09-04T14:25:58.656Z","parameter":"oxygen","unit":"mg_l","value":"8.8","equipment":"unspecified_oxygen_mg_l","equipment_limit":null},{"id":"0c01c8e8-eba8-4c05-b6cc-d6e69dc9a6d4","created_at":"2025-09-04T14:25:58.671Z","updated_at":"2025-09-04T14:25:58.671Z","parameter":"total_phosphorus","unit":"ppb","value":"6","equipment":"unspecified_total_phosphorus","equipment_limit":null},{"id":"ab69a9de-0335-406e-a5e8-1dae1dd6f49d","created_at":"2025-09-04T14:25:58.682Z","updated_at":"2025-09-04T14:25:58.682Z","parameter":"water_temperature","unit":"deg_c","value":"23.8","equipment":"unspecified_water_temperature","equipment_limit":null},{"id":"c3755e1d-b468-475e-9664-d1e1c617093a","created_at":"2025-09-04T14:25:58.720Z","updated_at":"2025-09-04T14:25:58.720Z","parameter":"total_kjeldahl_nitrogen","unit":"mg_l","value":"200","equipment":"lab_unspecified","equipment_limit":null}]},{"id":"d3243f12-70d9-4ae7-a34b-73114bdb008a","created_at":"2025-09-04T14:25:58.398Z","updated_at":"2026-01-20T20:44:45.902Z","owner_id":"490685c6-e1c0-4eec-8b00-4b1f833e5581","location_id":"23e91a9f-dcff-4fbc-b418-b727639a0131","dataset_id":"f13843e3-100c-4126-a33c-8edb632a981b","form_id":"93e5d9c7-5c11-4eda-ab0f-2e1bcd433c0c","observed_at":"2012-07-04T04:00:00.000Z","observed_at_local":"2012-07-04T00:00:00-04:00","notes":null,"checked":"review_needed","qa_notes":"Review needed: Based on previous readings, oxygen's result of 8.18mg/L is outside the expected range of 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