Figure 3: Linear relationships between all paired discrete and calculated measurements of (a) Chlorophyll-a, (b) suspended particulate matter, and (c) dissolved oxygen concentrations.
From: Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015
Discrete measurements are laboratory analyses of water samples; calculated values are derived from ship-based sensors calibrated each sampling cruise with discrete measurements. Red lines are linear regressions; n, number of paired samples; R2, adjusted correlation coefficient from linear regression; RSE is the residual standard error of the regression, an estimator of error in calculated concentrations from sensors.
