https://ctech.com/studio_help/module-libraries/import/read_evs_field/eff_file/index.htmlEVS Field File Formats and Examples EVS Field file formats supplant the need for UCD, netCDF, Field (.fld), EVS_Geology by incorporating all of their functionality and more in a new file format with three mode options. .eff ASCII format, best if you want to be able to open the file in an editor or print itHugoen-us