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)
19920042	47	Red Green Blue z 19.10 znorm 14.92 sky 14.6 14.5 14.7 S/N 16.2 26.4 32.6 S/N(c) 9.7 20.4 26.3 SN(E/C) 0.94
19920043	47	Red Green Blue z 19.16 znorm 14.98 sky 14.8 14.8 14.9 S/N 16.9 27.1 33.3 S/N(c) 10.1 20.9 26.9 SN(E/C) 0.92
19920044	47	Red Green Blue z 19.14 znorm 14.96 sky 14.7 14.8 14.9 S/N 16.5 27.1 33.3 S/N(c) 10.0 20.8 26.4 SN(E/C) 0.95
19920045	47	Red Green Blue z 19.16 znorm 14.98 sky 14.7 14.7 15.1 S/N 16.7 27.6 33.4 S/N(c) 10.1 21.3 26.9 SN(E/C) 0.93