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needed: conductivity's result of 1137μS/cm is outside the expected range of 0.0-1089.03μS/cm (3.0 standard deviations from the historical mean for this location).\nReview needed: oxygen's result of 3% is below the normal range of 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needed: conductivity's result of 808μS/cm is outside the expected range of 233.25-699.75μS/cm (50.0% difference from the historical median for this location).\nReview needed: oxygen's result of 52% is outside the expected range of 0.75-5.25% (75.0% difference from the historical median for this location).","qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","water_temperature","salinity","e_coli","conductivity","total_dissolved_solids_tds","oxygen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/179114","readings":[{"id":"8aa9188e-d5a1-4be1-aac5-897b532d2e78","created_at":"2025-12-05T22:34:32.978Z","updated_at":"2025-12-05T22:34:32.978Z","parameter":"ph","unit":"std_units","value":"7.2","equipment":"water_rangers_freshwater_teststrips_ph","equipment_limit":null},{"id":"029329d2-b99b-45ab-981f-f7ea3ab1d603","created_at":"2025-12-05T23:07:30.743Z","updated_at":"2025-12-05T23:07:30.743Z","parameter":"water_temperature","unit":"deg_c","value":"18.41","equipment":"water_rangers_pen_type_temperature_meter","equipment_limit":null},{"id":"fe3e6007-4247-4ed7-9f4d-35b35bedc21a","created_at":"2025-12-10T16:47:29.365Z","updated_at":"2025-12-10T16:47:29.365Z","parameter":"salinity","unit":"ppm","value":"0.4","equipment":"water_rangers_pen_type_salinity_meter_ppm","equipment_limit":null},{"id":"dd3bcbf9-ca4b-45b9-a507-476a46866675","created_at":"2025-09-04T19:31:37.875Z","updated_at":"2025-09-04T19:31:37.875Z","parameter":"e_coli","unit":"cfu_per_100ml","value":"0","equipment":"other_ecoli_lab","equipment_limit":null},{"id":"d3feb6e4-379e-4457-bb6a-323e8050c292","created_at":"2025-09-04T19:31:37.892Z","updated_at":"2025-09-04T19:31:37.892Z","parameter":"conductivity","unit":"us_cm","value":"808","equipment":"water_rangers_pen_type_conductivity_meter_low_range","equipment_limit":null},{"id":"75c67703-f35e-425b-88d4-ae3f436698dc","created_at":"2025-09-04T19:31:37.901Z","updated_at":"2025-09-04T19:31:37.901Z","parameter":"total_dissolved_solids_tds","unit":"ppm","value":"404","equipment":"other_pen-type_tds_meter","equipment_limit":null},{"id":"6097639b-b00c-4ab6-b13b-f6a42d04f536","created_at":"2025-12-10T17:16:41.635Z","updated_at":"2025-12-10T17:16:41.635Z","parameter":"oxygen","unit":"percent","value":"52","equipment":"other_do_multimeter_percent","equipment_limit":null}]},{"id":"94736a59-b4f7-4e04-96b4-1104843f525b","created_at":"2025-09-04T19:31:37.748Z","updated_at":"2026-01-20T19:15:51.676Z","owner_id":"d07a4087-9e83-4929-b3b5-db28f5fee4dd","location_id":"301d2204-d7be-44ff-bdec-813b8324d613","dataset_id":"f757ed2e-52ce-482a-8e2f-6b20e08d842c","form_id":"11d644cc-aa6f-448e-82df-bf2dc5bf7dce","observed_at":"2019-02-19T19:45:00.000Z","observed_at_local":"2019-02-19T13:45:00-06:00","notes":"","checked":"qc_complete","qa_notes":null,"qa_admin_notes":"","qa_admin_notes_author_id":null,"qa_admin_notes_updated_at":null,"tested_parameters":["ph","water_temperature","e_coli","conductivity","total_dissolved_solids_tds","current_weather","previous_weather","salinity","oxygen"],"photos":[],"permalink":"https://data.waterrangers.com/observations/179113","readings":[{"id":"8b0d9db8-a50a-4b01-a2f9-6cd55ab8c036","created_at":"2025-12-05T22:34:33.032Z","updated_at":"2025-12-05T22:34:33.032Z","parameter":"ph","unit":"std_units","value":"6.8","equipment":"water_rangers_freshwater_teststrips_ph","equipment_limit":null},{"id":"096c1e89-ae4b-4122-a870-d99608e4b899","created_at":"2025-12-05T23:07:30.688Z","updated_at":"2025-12-05T23:07:30.688Z","parameter":"water_temperature","unit":"deg_c","value":"15.2","equipment":"water_rangers_pen_type_temperature_meter","equipment_limit":null},{"id":"71e78bea-a794-4cb7-81ed-a81630a74566","created_at":"2025-12-10T16:47:29.316Z","updated_at":"2025-12-10T16:47:29.316Z","parameter":"salinity","unit":"ppm","value":"0.28","equipment":"water_rangers_pen_type_salinity_meter_ppm","equipment_limit":null},{"id":"3006041b-823a-4498-84cd-74826b42458e","created_at":"2025-09-04T19:31:37.794Z","updated_at":"2025-09-04T19:31:37.794Z","parameter":"e_coli","unit":"cfu_per_100ml","value":"0","equipment":"other_ecoli_lab","equipment_limit":null},{"id":"1ff85a52-2a2b-40d6-b4fb-bf05fb118323","created_at":"2025-09-04T19:31:37.803Z","updated_at":"2025-09-04T19:31:37.803Z","parameter":"conductivity","unit":"us_cm","value":"583","equipment":"water_rangers_pen_type_conductivity_meter_low_range","equipment_limit":null},{"id":"cb13a369-353d-4b8f-9e83-6fc17810696b","created_at":"2025-09-04T19:31:37.811Z","updated_at":"2025-09-04T19:31:37.811Z","parameter":"total_dissolved_solids_tds","unit":"ppm","value":"291","equipment":"other_pen-type_tds_meter","equipment_limit":null},{"id":"69e97b3a-9782-46b8-a7e1-bdafe8b1b0cd","created_at":"2025-09-04T19:31:37.825Z","updated_at":"2025-09-04T19:31:37.825Z","parameter":"current_weather","unit":"nil","value":"sunny","equipment":"community_scientist_interpretation","equipment_limit":null},{"id":"865300c2-6a11-4fd0-9dd1-c2b9f2b118f6","created_at":"2025-09-04T19:31:37.831Z","updated_at":"2025-09-04T19:31:37.831Z","parameter":"previous_weather","unit":"nil","value":"sunny","equipment":"community_scientist_interpretation","equipment_limit":null},{"id":"0c5696e3-fc22-4dd4-a6ef-ab69487ba228","created_at":"2025-1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