The results showed that the Ping river water quality has an average water temperature in the range 26.8 -29.1 degrees C, pH 6.9 to 8.7, dissolved oxygen 4.1 to 5.7 milligrams per liter BOD from 0.3 to 0.7 milligrams per liter of the acid from 6.8 to 7.9 mg. per liter, a pH from 29.5 to 36.0 mg CaCO3 hardness from 71.0 to 82.0 mg per liter. Total solids 417.4 to 678.3 mg per liter. Total dissolved solids from 168.4 to 492.0 mg per liter. Suspended solids from 267.3 to 685.4 mg per liter. Nitrate - nitrogen from 0.004 to 0.008 mg per liter. And the amount of orthophosphate from 0.004 to 0.025 mg per liter.
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