multiPlotDataOverview: Produces a 4 panel plot that gives an overview of the data set prior to any processing
Description
This function produces the 4 plots based only on the data stored in the eList.
The four plots are 1) log concentration versus log discharge, 2) log concentration versus time
3) a boxplot of log concentration by month, and
4) a side-by-side boxplot of the sampled discharges and all daily discharges.
To save space, the graphic is labeled only at the top of the 4 graph display.
Although there are a lot of optional arguments to this function, most are set to a logical default.