RAOBPLOT -- Plots upper-air data from IRAB-schema point files
   RAOBPLOT param level map time day <keywords>
Parameters:
   param | parameter to contour; valid options are IDN, OBS, ELEV, OBTIME,
           PLOT, P, Z, T, TD, DIR, SPD, WIND, WINDB, WINDV (def=PLOT);
           see table in Remarks for descriptions and default units
   level | level of the data; valid options are the mandatory levels: SFC,
           TRO1, TRO2, MAXW, 1000, 925, 850, 700, 500, 400, 300, 250, 200,
           150, 100 (def=500)
   map | map for the plot; use any predefined map in MAP command, e.g.,
         FL, MID, USA, WORL (def=do not draw map; use navigation of frame
         specified in NAV keyword)
   time | observation time (def=0 if current time is between 0 UTC and
          11:59 UTC; otherwise def=12)
   day | observation date; valid formats include YYYYDDD, YYYY/MM/DD and
         DD/MON/YYYY where YYYY, DDD, MM and DD are integers and MON is
         3 or more letters, e.g., JAN or JANUARY (def=current)
Keywords:
   COLor= | graphics color level (def=3)
   DATaset= | point dataset name and position; specify as alias.position
              or group/descriptor.position where position is a positive
              integer (absolute position), 0 or a negative integer
              (relative position), or ALL   (def=RTPTSRC/UPPERMAND.ALL)
   DEClut=YES | declutter the plot, meaning do not plot overlapping
                values (def)
         =NO  | do not declutter the plot
   GRA= | graphic frame number to display output (def=current)
   LSIze= | plot height, in pixels, of specified parameter (def=8)
   NAV= | frame to use for navigation; specify frame number or C for
          current frame (def=C); you cannot use NAV keyword if anything
          other than the default value is used in the 'map' parameter
   UNIt= | units for specified parameter; see param table in Remarks for
           defaults; run CU LIST to list valid units and abbreviations for
           all params except PLOT, which accepts only A (for American) or
           M (for metric), def=M
Remarks:
   RAOBPLOT builds and runs a PTDISP command to display mandatory-level
   upper-air data from IRAB-schema point files.  RAOBPLOT accepts all the
   keywords in the PTDISP command except LAT, LON, MAP, PRO, SLAT, SLON and
   PARAM because they may conflict with RAOBPLOT's parameters or keywords.
   You can use PTDISP's SELECT keyword to limit the plot to a specified
   list or range of values, but you cannot specify a different parameter,
   level, time, day or unit than those defined by RAOBPLOT's parameters or
   keywords.

   The table below lists the valid 'param' entries under "Param(s)", their
   default units under "DefUnits" and a description of the parameter under
   "Description".  Default units enclosed in parenthesis cannot be changed.

   Param    DefUnits   Description
   -------  ---------  ---------------------------------------------------
   IDN      (number)   5-digit station ID number, e.g., 72645
   OBS       (dots)    observation locations
   ELEV        M       station elevation
   OBTIME    (HMS)     actual time of observation
   PLOT        M       station plot of IDN, T, TD, Z, WINDB; units are M,
                       for metric, or A, for American
   P           MB      pressure
   Z           M       height from surface
   T           C       temperature
   TD          C       dew point temperature
   DIR      (degrees)  wind direction
   SPD        KTS      wind speed
   WIND     (deg)KTS   4- or 5-digit wind direction and speed, ddsss,
                       where dd=direction and sss=speed
   WINDB     (barb)    wind barb (of DIR,SPD) where flag=25mps(~50kts),
                       long barb=5mps(~10kts), short barb=2.5mps(~5kts)
   WINDV    (vector)   wind vector (using DIR,SPD)
---------
