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This article constructs the integrated evaluation system on the basis of GIS secondary development. Through spatial expression ability of GIS, we make overall situation of water quality and variation tendency more clear to the administrators. For different years and monitoring sections, through the menu, we can easily obtain monitor water quality values from backstage supported database, and calculate...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.