Variables extracted/derived from the matching 2AKu file:

ray_2aku - Ray number in 2AKu file of ray at (latitude_2aku,longitude_2aku)
scan_2aku - Ditto, but scan number
latitude_2aku - Latitude of user-selected DPR footprint, deg. N
longitude_2aku - Longitude of user-selected DPR footprint, deg. E
file_2aku - Pathname of matching 2AKu file selected by user
stormTop_2aku - Storm top of 2AKu ray, meters.
Zmeas250_2aku - Measured Z profile of 2AKu ray reduced to 250-m resolution, dBZ
maxZmeas250_2aku - Maximum value of 250-m Z above clutter region, dBZ
binClutterFree250_2aku - Lowest clutter free bin of Zmeas250_2aku
Zmeas125_2aku - Measured Z profile of 2AKu ray at original 125-m resolution, dBZ
scanAngle_2aku - localZenithAngle value for 2AKu ray, degrees from nadir

Variables extracted/derived from the GRtoDPRGMI volume-match file:

gr_z_volmatch2b - GR reflectivity, volume matched to DPRGMI, dBZ
cmb_z_volmatch2b - DPRGMI corrected reflectivity, volume matched to GR, dBZ
cmb_z_pctabvthresh_volmatch2b - Percent of DPRGMI Z gates in sample volume above
                                the specified threshold for the volume match
cmb_z_threshold - Threshold used in evaluating DPRGMI Z percent above threshold
gr_z_pctabvthresh_volmatch2b - Percent of GR Z gates in sample volume above
                               the specified threshold for the volume match
gr_z_threshold - Threshold used in evaluating GR Z percent above threshold
gr_dm_volmatch2b -  GR Dm or D0, volume matched to DPRGMI (mm)
gr_dm_type - Either 'DM' or 'D0' depending on GR_DM_FIELD input parameter,
             defaults to 'DM' if not specified.
cmb_dm_volmatch2b -  DPRGMI Dm, volume matched to GR (mm)
gr_nw_volmatch2b -  GR Nw, volume matched to DPRGMI, log10(Nw)
gr_nw_type - Either 'NW' or 'N2' depending on GR_NW_FIELD input parameter,
             defaults to 'NW' if not specified.
cmb_nw_volmatch2b - DPRGMI Nw, volume matched to GR, converted to log10(Nw)
raintype_volmatch2b - DPRGMI rain type, volume matched to GR
                      (replicated at each level)
bb_proximity_volmatch2b - Proximity of each volume-match sample to the mean BB height:
                          1 = Below bright band (sample top 750m or more below BB)
                          2 = Within bright band, neither 1 nor 3
                          3 = Above bright band (sample bottom 750m or more above BB)
top_hgt_volmatch2b - Height above surface of each volume-match sample top, km
bottom_hgt_volmatch2b - Height above surface of each volume-match sample bottom, km
cmb_rainrate_volmatch2b - DPRGMI 3-D rain rate, volume matched to GR, mm/h
gr_rainrate_volmatch2b - GR 3-D rain rate, volume matched to DPRGMI, mm/h
gr_rainrate_type - Source algorithm of GR rainrate: 'RR' (DROPS), 'RC' (Cifelli),
                   'RP' (polarimetric Z-R, or Bringi), or 'Z-R' (WSR-88D default
                   Z-R relationship: a=300.0, b=1.4)
