row_num,CN,PLT_CN,INVYR,STATECD,COUNTYCD,O3PLOT,FIELD_ID,SPLIT_PLOTID,SMPKNDCD,MEASDAY,MEASMON,MEASYEAR,PLTSIZE,ASPECT,TERRPOS,SOILDPTH,SOILDRN,PLTDSTRB,CRWTYPCD,PLOTWET,INJCHECK,GRIDDEN,CREATED_BY,CREATED_DATE,CREATED_IN_INSTANCE,MODIFIED_BY,MODIFIED_DATE,MODIFIED_IN_INSTANCE