Left plots: red are targets, blue are telluric. Observed mags are calculated from median value of green chip. Zeropoint gives overall throughput: bigger number is more throughput.
First spatial plots: circles are objects, squares are tellurics, crosses are sky fibers. Colors give deviation of observed mag from expected 2MASS mag using the median zeropoint; red is brighter
Second spatial plots: circles are sky fibers. Colors give sky line brightness relative to plate median sky line brightness

Frame	Nreads	Zeropoints	Mag plots	Spatial mag deviation	Spatial sky 16325A emission deviations (filled: sky, open: star)	Spatial sky continuum emission	Spatial sky telluric CO2 absorption deviations (filled: H < 10)
19920022	94	Red Green Blue z 19.83 znorm 14.90 sky 14.6 14.2 14.3 S/N 30.0 40.2 49.8 S/N(c) 16.5 45.8 12.1 SN(E/C) 0.62
19920023	94	Red Green Blue z 19.87 znorm 14.93 sky 14.5 14.5 14.4 S/N 29.9 40.5 49.8 S/N(c) 16.5 45.0 11.6 SN(E/C) 0.65
19920024	94	Red Green Blue z 19.84 znorm 14.91 sky 14.5 14.4 14.5 S/N 30.1 40.7 50.1 S/N(c) 16.6 45.1 11.3 SN(E/C) 0.61
19920025	94	Red Green Blue z 19.87 znorm 14.93 sky 14.6 14.6 14.4 S/N 30.0 40.7 50.0 S/N(c) 16.6 45.1 11.1 SN(E/C) 0.62