Contour map creation in JSL brings up MIN/MAX/#LAYERS diaglog for each graph
directory = "C:\TEST\";
fileNames = Files In Directory( directory );
For( iFile = 1, iFile <= N Items( fileNames ), iFile++,
filename = fileNames[iFile];
If( Ends With( filename, ".csv" ),
dt = Open( directory || filename );
max = Col Max(Column( dt,4));
min = Col Min(Column( dt,4));
dt:DC_0VDC << Format( "Engineering", 12 );
dt:DC_1VDC << Format( "Engineering", 12 );
dt:DC_3VDC
...