All data files are ascii text (.txt) files.

Updates will be going into the prof839088 directory only.


Files are generally named with the first 3 letters of the county. The most
commonly used file extensions are as follows: 

          .ccc = control line survey
          .con = condition survey, usually not as many ranges
          .spe = special purpose survey
          .fmn = edited outside survey, quality checked
          .cod = 8 code file of notes regarding specific profile data
          .fcm = edited outside contract survey, quality checked