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Fig. 5. Concentrations of (a) atrazine and metolachlor (corrected immunoassay) and (b) gas chromatography–mass spectrometry (GC–MS) atrazine, deisopropylatrazine (DIA), and deethylatrazine (DEA) for all surface water samples collected in the Upper Embarras River watershed from 1 Mar. 1999 through 1 Oct. 2000. Box plot shows median (line in center of box), 25th and 75th percentiles (bottom and top of box, respectively), 10th and 90th percentiles (bottom and top error bars, respectively), and values < 10th percentile and > 90th percentile (solid circles below and above error bars, respectively).
