Ymonstat: added support for option timestat_date.

ChangeLog

@@ -3,6 +3,10 @@
 	* Using CDI library version 1.9.9
 	* Version 1.9.9 release
 
+2020-10-26 Uwe Schulzweida
+
+	* Ymonstat: added support for option timestat_date
+
 2020-10-16 Uwe Schulzweida
 
 	* Added support for keyword np  in grid description file  (alias for numNPE) [Bug #9943]

doc/tex/mod/Ymonstat

@@ -12,6 +12,7 @@ This module computes statistical values of each month of year.
 Depending on the chosen operator the minimum, maximum, range, sum, average, variance
 or standard deviation of each month of year in @file{infile} is written to @file{outfile}.
 The date information in an output field is the date of the last contributing input field.
+This can be change with the CDO option --timestat_date <first|middle|last>.
 @EndDescription
 @EndModule
 

src/operator_help.h

@@ -3452,6 +3452,7 @@ static const char *YmonstatHelp[] = {
     "    Depending on the chosen operator the minimum, maximum, range, sum, average, variance",
     "    or standard deviation of each month of year in infile is written to outfile.",
     "    The date information in an output field is the date of the last contributing input field.",
+    "    This can be change with the CDO option --timestat_date <first|middle|last>.",
     "",
     "OPERATORS",
     "    ymonmin    Multi-year monthly minimum",