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Water quality datasets collected from thirteen typical watersheds across China between 16 June 2021 and 31 December 2025, with a four-hour sampling interval. The data includes eleven indicators such as water temperature, pH, dissolved oxygen, and nutrient concentrations. Raw data was sourced from the China National Environmental Monitoring Center's National Surface Water Quality Automatic Monitoring Data Release System.
Files are provided in JPG and TXT formats; the 1.1 GB size suggests the TXT files contain the primary data.