a.    weight -- weights versus time
      The weight plot shows the station-weights for the duration of the
      experiment. The IFs and polarizations are color coded, with the 
      key at the bottom of the page(s).  A maximum of four IF/pol
      combinations are plotted (cross-pols are not plotted, since their
      weights can be deduced from the parallel hands). The first scan of
      the various sources is labeled with the source name in the upper
      portion of each subplot. Every integration is plotted.

      The weights are properly the fraction of 'good' data per integration
      period. Weights < ~1 result from less than optimal tape recording or
      playback. Weights of 0 occur when there are no valid data found on
      the media, or when synchronization fails.  Gaps correspond either to
      scheduled tape pauses, or station recording or playback failures.

b.    auto -- auto-correlation amplitudes
      The auto plots show the station autocorrelation-amplitude spectra
      (bandpasses), with each IF plotted separately. These are done for
      one minute of data from one or more scan of a bright calibrator.
      All subplots have independently-scaled y-axes (not necessarily going
      down to zero); this may exaggerate "curviness" in IFs with little
      change in autocorrelation across the band.  The frequency of the
      low-edge of each IF is annotated (note -- not the DC edge for lower
      side-bands).  Polarizations per IF are overplotted, with color
      coding as give by the key at the bottom of the page(s).  RL==LR, so
      only one cross-pol will be visible.

c.    cross -- cross-correlation amplitudes and phases
      The cross plots show amplitude and phase for baselines to a reference
      antenna, usually for the same scans as the auto-plots above. They
      have the same lay-out characteristics as the auto-plots.  Source
      detections are indicated by phase connection across the band and a
      higher-than-noise-floor amplitude. Only one minute of data is
      (vector) averaged.  Polarizations are color-coded following the key
      at the bottom of the page(s).

d.    ampphase -- amplitude and phase versus time
      The ampphase plots show frequency-averaged amplitude and phase as a
      function of time in the vicinity of the scan used in the cross-plots.
      For clarity, only two channels are plotted. A strong detection will
      appear as coherent phases and an elevated amplitude.