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)
19910051	42	Red Green Blue z 17.83 znorm 13.77 sky 14.4 14.2 14.5 S/N 6.5 12.0 14.1 S/N(c) 12.2 16.9 8.6 SN(E/C) 0.90
19910052	42	Red Green Blue z 17.82 znorm 13.76 sky 14.6 14.4 14.5 S/N 6.8 12.6 13.8 S/N(c) 11.8 16.7 8.6 SN(E/C) 0.88
19910053	42	Red Green Blue z 17.99 znorm 13.93 sky 14.5 14.4 14.4 S/N 8.4 14.0 16.3 S/N(c) 12.8 17.4 8.8 SN(E/C) 0.91
19910054	42	Red Green Blue z 17.98 znorm 13.92 sky 14.3 14.2 14.6 S/N 8.6 14.2 16.8 S/N(c) 13.2 17.7 9.1 SN(E/C) 0.93
19910055	42	Red Green Blue z 18.76 znorm 14.70 sky 14.3 14.2 14.3 S/N 14.0 22.1 26.0 S/N(c) 20.8 26.1 13.9 SN(E/C) 0.80
19910056	42	Red Green Blue z 18.85 znorm 14.79 sky 14.3 14.3 14.3 S/N 14.8 23.5 27.6 S/N(c) 22.3 27.5 14.7 SN(E/C) 0.74