diff --git a/tsg_io/writeAsciiTsg.m b/tsg_io/writeAsciiTsg.m
index 0a7877c04468ded6d628c0840e600816e30fc3de..9606a8d1be6884197a137f52327204af736a0647 100644
--- a/tsg_io/writeAsciiTsg.m
+++ b/tsg_io/writeAsciiTsg.m
@@ -23,7 +23,8 @@ PARA = { 'CNDC'; 'CNDC_CAL'; ...
          'SSJT'; 'SSJT_QC'; 'SSJT_CAL';...
          'SSJT_ADJUSTED'; 'SSJT_ADJUSTED_QC'; 'SSJT_ADJUSTED_ERROR'; ...
          'SSTP'; 'SSTP_QC'; 'SSTP_CAL';...
-         'SSTP_ADJUSTED'; 'SSTP_ADJUSTED_QC'; 'SSTP_ADJUSTED_ERROR'};
+         'SSTP_ADJUSTED'; 'SSTP_ADJUSTED_QC'; 'SSTP_ADJUSTED_ERROR'; ...
+         'CNDC_FREQ'; 'SSJT_FREQ'};
 
 % Choose parameters to export
 % ---------------------------
@@ -76,6 +77,9 @@ if choice
         if findstr( '_QC', para)
           tsg_data = [tsg_data double(tsg.(para))];
           format   = [format ' %1d'];
+        elseif findstr( '_FREQ', para)
+          tsg_data = [tsg_data tsg.(para)];
+          format   = [format ' %f'];
         else
           tsg_data = [tsg_data tsg.(para)];
           format   = [format ' %6.3f'];