WASHINGTON, Sept. 9 (TNSLrpt) -- The U.S. Geological Survey issued Scientific Investigations Report 20265052, 'Evaluating Chlorophyll Fluorescence Sensors as a Proxy for Chlorophyll a Concentrations in the Illinois River, Illinois, Water Years 2018-24,' by Brock J.W. Kamrath and Colin S. Peake. The report finds that sensors measuring chlorophyll fluorescence generally followed laboratory measurements of chlorophyll a in the Illinois River, but the sensor readings often showed bias and . . .

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