The 'standard plots' for GV020E are as follows:

  gv020e.{wat}-weight.ps              station weight vs. time 
  gv020e.{wat}-auto-[1,2].ps          station autocorrelation amp vs. freq
  gv020e.{wat}-cross-[1,2][a,p].ps    baseline amp/phs vs. freq
  gv020e.{wat}-ampphase-{N}[a,p].ps   Ef-* baseline amp/phs vs. time,

The field {wat} represents the pass using different correlation phase centers:
   psrc,  s1,  xrb,  vrtx1,  vrtx2,  vrtx3
The auto and cross plots show data from scans 38 [1] and 132 [2] (both 
3C454.3).  The ampphase plots show amp [a] or phase [p]  vs. time for 
the whole experiment, omitting target scans, with some variants as
described below (keyed by the extra integer {N}).


The antenna numbering in these plots is 0-based -- thus one less than the
corresponding antenna numbers in the AIPS FITS file.


(a) WEIGHT plots

  The plot shows the weights for all IFs (parallel-hands only) per station,
with each 0.5s integration plotted as a separate ".".   The IF/pol 
color-coding is:

 IF1/RR = red    IF1/LL = blue      IF2/RR = cyan        IF2/LL = green
 IF3/RR = pink   IF3/LL = med.grey  IF4/RR = brown       IF4/LL = purple
 IF5/RR = teal   IF5/LL = yellow    IF6/RR = steel blue  IF6/LL = lt.grey
 IF7/RR = black  IF7/LL = orange    IF8/RR = lt.green    IF8/LL = lt.purple


(b) AUTOCORRELATION SPECTRA plots

  The plots show data from the scans listed above.  The IFs for a station
are plotted side-by-side, with RFI in one IF able to throw off the y-axis
scale for other IFs.  The polarization color-coding is RR=red, LL=blue.
The first & last frequency points have been omitted.

(c) BASELINE SPECTRA plots 

  The baseline vs. frequency plots show vector-averaged amplitude and phase 
for all baselines for the same scans as the autocorrelation plots, with amp &
phase going to separate plots using the same baseline lay-out on the page.
The polarization color-coding remains RR=red, LL=blue.  The first & last
frequency points have been omitted in the amp(frq) plots.


(d) AMP/PHASE(t) plots 

  The baseline vs. time plots show amplitude and phase for non-target scans 
on Ef-*, with amp & phase going to separate plots.  Each 0.5s integration 
is plotted as a separate ".", with the middle 80% of the band used for 
vector-averaging over frequency.  The IF/pol color-coding is the same as 
for the weight plot.  There is a variant for each of the amp(t) and phase(t)
plots:
    *ampphase-2a-ps:  only J2139+1423 is plotted (to avoid the y-axis scale
         being dominated on shorter baselines by 3C454.3.
    *ampphase-3p-ps:  x-axis is integration number per baseline rather than 
         the actual epoch of the integrations, spreading out each scan
         horizontally to make it easier to follow the general flow of 
         phase(t) per scan.