John:

To me it looks correct. The x axes of both the top contour plot
and the middle slt line plot is *ut* (not local time). The yaxis
of the center slt line plot is slt. The pc11b file starts out:

 JD  HR MN  SEC   MD HR MN  SEC   BLOCK MODE LAT(S) LNG(S) ALT(S) D/N LAT(TP)LNG(TP)TAN.HT D/N LT(TP) P.GIMB   SZA    SAA    FSA
 120 16 25 30.011  2  4 52 16.011 PC11B 30B   15.01 344.56 254.74  D   25.72 349.53 118.46  D   15.73 -13.85  53.83 270.00 109.60

I don't know if email chopped that off, but the first LT(TP) value
is 15.73. This is at HR:MN:SEC 16:25:30.011. From there the LT rises
to 24 (0), arriving there at 16:58:26, as shown on my SLT plot,
where it goes from 24 to 0 lt just before ut 17 (this is about data
record 395 in pc11b). Then LT climbs again, reaching noon at around 
17.7 ut (about record 922), and ending at 14.22 lt (about 17.8+ ut).

This particular plot is a bit confusing because ut and lt are 
coincidentally close to each other at the beginning because the
lon(tp) is close to 0 (we use a -180->180 deg system)(note lon 0
at beginning of orbit track map at bottom).

--Ben