The remaining topics in the workbook can only be run in EVS-PRO or MVS.
Sometimes confidence and uncertainty just won’t answer your (or your customer’s) question. Just how big (or small) might the contaminant plume be? EVS displays concentration, but what are the limits? The Min-Max Plume option directly answers those questions.
Before we begin, we will need to change a few settings. First, turn off the Run Drill Guide toggle in Krig_2D’s Drill Guide window. Also turn off the Target Concentration at Isolevel toggle. This will cause Krig_2D to treat uncertainty in the default manner.
Open up the Kriging Parameters and choose Min-Max Plume for the Interpolation Method. Note that the default Confidence parameter is set to 60 (%). We will change it to 75 (%) for this workbook.
In order to assess how much we’ve improved things with our 31 Drill Guide cycles, let’s go back to the original data file initial_soil_investigation_full_site.csv.
&ldots;and click on Accept All Current Values again.
Set your Display parameters back to "VOC".
Change your view to match the Az-El setting below.
&ldots;and your Viewer should show the original VOC distributions.
Switching to 75%Min:VOC will display the smallest that plume should be with a 75% confidence.
Note that the extent of the light blue and green areas is reduced.
Switching to 75%Max:VOC will display the largest that plume should be with a 75% confidence.
Note that the extent of the light blue and green areas is significantly increased.
It is obvious that there is a significant difference between the Min and Max values, but we should quantify that difference.