Appendix
103
Fig. A.2 EWMA charts of concentration data after excluding the outlier sites (when CV% > 50%,
indexed as Me_1 in the graph, N = 47—the number of outlier sites) and of original data (CV% <
50%, indexed as Me in the graph, N = 47)
103
Fig. A.2 EWMA charts of concentration data after excluding the outlier sites (when CV% > 50%,
indexed as Me_1 in the graph, N = 47—the number of outlier sites) and of original data (CV% <
50%, indexed as Me in the graph, N = 47)