-Results are generated by multiple executions of the same CSIT tests.
-In order to display variation in measured throughput values, Box-and-
-whisker plots are used to show their quartiles (Min, 1st quartile / 25th
-percentile, 2nd quartile / 50th percentile / mean, 3rd quartile / 75th
-percentile, Max). Outliers are plotted as individual points.
+Results are generated by multiple executions of the same CSIT
+performance tests across three physical testbeds within LF FD.io labs.
+To provide a descriptive summary view, Box-and-Whisker plots are used to
+display variation in measured throughput values, without making any
+assumptions of the underlying statistical distribution. For each plotted
+test case, Box-and-Whisker plots show the quartiles (Min, 1st quartile
+/ 25th percentile, 2nd quartile / 50th percentile / mean, 3rd quartile /
+75th percentile, Max) across collected data set (data set size stated in
+the note below). Outliers are plotted as individual points.