Fig. 3. Boxplot of Campylobacter concentrations, most probable number (MPN)/100 mL, at 10 sites in the lower Taieri River, shown in order of downstream position. The box covers the interquartile range (IQR) and the line within the box is the median. Whiskers extend to ±1.5 x IQR. Outliers are plotted as asterisks. (Note: For Site 6, the upper bound of the interquartile range is equal to the median.)

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