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needed: oxygen's result of 1.6mg/L is below the normal range of 3.0mg/L.\nReview needed: oxygen's result of 16% is below the normal range of 20.0%.","qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["oxygen","water_temperature"],"photos":[],"permalink":"https://data.waterrangers.com/observations/125154","readings":[{"id":"12238dc9-b3b3-4587-983b-fbfe5aec2fc9","created_at":"2025-09-03T18:37:39.993Z","updated_at":"2025-09-03T18:37:39.993Z","parameter":"oxygen","unit":"mg_l","value":"1.6","equipment":"unspecified_oxygen_mg_l","equipment_limit":null},{"id":"6b405d50-84b2-4cdc-8a4f-0686b4f5e522","created_at":"2025-09-03T18:37:40.000Z","updated_at":"2025-09-03T18:37:40.000Z","parameter":"water_temperature","unit":"deg_c","value":"16.8","equipment":"unspecified_water_temperature","equipment_limit":null},{"id":"740651c4-2d07-44f7-9970-306b7577dfe9","created_at":"2025-09-03T18:37:39.996Z","updated_at":"2025-11-20T19:32:54.348Z","parameter":"oxygen","unit":"percent","value":"16","equipment":"unspecified_oxygen_percent","equipment_limit":null}]},{"id":"5fc20029-e55d-46f6-952c-8cd46d57cdc8","created_at":"2025-09-03T18:37:39.916Z","updated_at":"2026-01-02T19:06:36.875Z","owner_id":"9df51437-25db-4627-8f5f-a11d29439b73","location_id":"550a4810-e47a-46d2-a2ea-8f62bc9797ec","dataset_id":"62d0e51f-bb8c-41a2-831d-2f276de4075d","form_id":"f7aae285-3489-4566-b1f5-018527589b3a","observed_at":"2015-06-28T09:15:00.000Z","observed_at_local":"2015-06-28T02:15:00-07:00","notes":null,"checked":"review_needed","qa_notes":"Review needed: oxygen's result of 2.1mg/L is below the normal range of 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