Figure 3

Boxplots of isotope data for 43 analysed individuals from Simon’s Town, South Africa burial site. Key: Whiskers represent minimum and maximum values of data according to the interquartile range rule. The top box represents the 3rd quartile, and the lower box represents the 1st quartile. The top box line represents the median of the 3rd quartile, the middle line represents the median of the whole dataset, and the lower box line represents the median of the 1st quartile. The × visible within the box represents the mean. All data points that are present outside of the whisker range represent suspected outliers.