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needed: ph's result of 6.3std_units is outside the expected range of 6.4-8.4std_units (25.0% difference from the historical median for this location).\nReview needed: conductivity's result of 553μS/cm is outside the expected range of 0.0-414.7μS/cm (3.0 standard deviations from the historical mean 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"],"photos":[],"permalink":"https://data.waterrangers.com/observations/178975","readings":[{"id":"b9065a57-da96-4d35-8e78-82385934fb3f","created_at":"2025-12-05T22:34:33.094Z","updated_at":"2025-12-05T22:34:33.094Z","parameter":"ph","unit":"std_units","value":"6.3","equipment":"water_rangers_freshwater_teststrips_ph","equipment_limit":null},{"id":"e02ca177-ab38-46b0-92fd-ddeaaab8c073","created_at":"2025-12-05T23:07:31.765Z","updated_at":"2025-12-05T23:07:31.765Z","parameter":"water_temperature","unit":"deg_c","value":"20.28","equipment":"water_rangers_pen_type_temperature_meter","equipment_limit":null},{"id":"0e210a94-d109-4982-8ebd-a1b60157d61e","created_at":"2025-12-10T16:47:30.416Z","updated_at":"2025-12-10T16:47:30.416Z","parameter":"salinity","unit":"ppm","value":"0.27","equipment":"water_rangers_pen_type_salinity_meter_ppm","equipment_limit":null},{"id":"f8a66472-70b0-45d3-99c2-b916ab80ad21","created_at":"2025-09-04T19:31:25.913Z","updated_at":"2025-09-04T19:31:25.913Z","parameter":"e_coli","unit":"cfu_per_100ml","value":"1200","equipment":"other_ecoli_lab","equipment_limit":null},{"id":"75c8ce51-90a7-467a-802f-7468c0d9ab47","created_at":"2025-09-04T19:31:25.929Z","updated_at":"2025-09-04T19:31:25.929Z","parameter":"conductivity","unit":"us_cm","value":"553","equipment":"water_rangers_pen_type_conductivity_meter_low_range","equipment_limit":null},{"id":"b22db72e-efab-4806-b59e-4acf1d618fac","created_at":"2025-09-04T19:31:25.939Z","updated_at":"2025-09-04T19:31:25.939Z","parameter":"total_dissolved_solids_tds","unit":"ppm","value":"277","equipment":"other_pen-type_tds_meter","equipment_limit":null}]},{"id":"fd4de038-263f-4aff-a130-ecebbcb6a4ef","created_at":"2025-09-04T19:31:25.813Z","updated_at":"2026-01-20T19:15:25.336Z","owner_id":"d07a4087-9e83-4929-b3b5-db28f5fee4dd","location_id":"fa5956d8-ffdd-48fd-8e53-31c0832646ee","dataset_id":"f757ed2e-52ce-482a-8e2f-6b20e08d842c","form_id":"11d644cc-aa6f-448e-82df-bf2dc5bf7dce","observed_at":"2019-02-20T17:20:00.000Z","observed_at_local":"2019-02-20T11:20:00-06:00","notes":"La ubicación específica de esta muestra es arriba de la descarga de aguas residuales tratadas, por lo que el resultado de la muestra de bacteriología es 0.","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","salinity"],"photos":[],"permalink":"https://data.waterrangers.com/observations/178974","readings":[{"id":"cb882717-e564-45d3-848f-2dad8634cba2","created_at":"2025-12-05T22:34:27.677Z","updated_at":"2025-12-05T22:34:27.677Z","parameter":"ph","unit":"std_units","value":"8.3","equipment":"water_rangers_freshwater_teststrips_ph","equipment_limit":null},{"id":"14b90d7e-aeda-43da-958a-2714eb5cc926","created_at":"2025-12-05T23:07:31.706Z","updated_at":"2025-12-05T23:07:31.706Z","parameter":"water_temperature","unit":"deg_c","value":"19.39","equipment":"water_rangers_pen_type_temperature_meter","equipment_limit":null},{"id":"518f8a77-e37d-4b80-a72e-cfc28b14c575","created_at":"2025-12-10T16:47:30.361Z","updated_at":"2025-12-10T16:47:30.361Z","parameter":"salinity","unit":"ppm","value":"0.09","equipment":"water_rangers_pen_type_salinity_meter_ppm","equipment_limit":null},{"id":"f7ae8291-36c7-4137-b8c3-da1f559df480","created_at":"2025-09-04T19:31:25.855Z","updated_at":"2025-09-04T19:31:25.855Z","parameter":"e_coli","unit":"cfu_per_100ml","value":"0","equipment":"other_ecoli_lab","equipment_limit":null},{"id":"a5adda91-8aea-4295-910c-92fc0d5f608c","created_at":"2025-09-04T19:31:25.862Z","updated_at":"2025-09-04T19:31:25.862Z","parameter":"conductivity","unit":"us_cm","value":"186","equipment":"water_rangers_pen_type_conductivity_meter_low_range","equipment_limit":null},{"id":"2010bb18-81b3-4b1d-a628-fa9125f6f7a0","created_at":"2025-09-04T19:31:25.875Z","updated_at":"2025-09-04T19:31:25.875Z","parameter":"total_dissolved_solids_tds","unit":"ppm","value":"93","equipment":"other_pen-type_tds_meter","equipment_limit":null}]}]