Figure 5: A comparison of nutrient concentrations in San Francisco Bay water samples collected from 2013–2015 and measured by three laboratories. | Scientific Data

Figure 5: A comparison of nutrient concentrations in San Francisco Bay water samples collected from 2013–2015 and measured by three laboratories.

From: Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015

Figure 5

USGS National Water Quality Laboratory (USGS NWQL), San Francisco State University (SFSU), and Chesapeake Biological Laboratory (CBL). Each comparison includes the linear regression equation, adjusted R2, and Residual Standard Error (RSE) as an estimator of the mean difference between laboratories. Comparisons of silicate analyses were only done for USGS NWQL and CBL.

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