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)
19910040	47	Red Green Blue z 18.89 znorm 14.71 sky 14.3 14.1 14.3 S/N 15.3 24.3 27.1 S/N(c) 18.2 25.8 19.0 SN(E/C) 0.86
19910041	47	Red Green Blue z 18.95 znorm 14.77 sky 14.5 14.4 14.3 S/N 15.5 25.3 27.9 S/N(c) 18.8 26.6 19.6 SN(E/C) 0.90
19910042	47	Red Green Blue z 19.00 znorm 14.82 sky 14.5 14.4 14.5 S/N 16.1 26.1 28.9 S/N(c) 19.2 27.1 20.0 SN(E/C) 0.85
19910043	47	Red Green Blue z 19.01 znorm 14.83 sky 14.7 14.4 14.4 S/N 16.4 26.3 29.2 S/N(c) 19.3 27.3 20.1 SN(E/C) 0.86
19910044	47	Red Green Blue z 19.00 znorm 14.82 sky 14.3 14.3 14.4 S/N 16.5 26.7 29.5 S/N(c) 19.0 27.1 19.9 SN(E/C) 0.85
19910045	47	Red Green Blue z 19.04 znorm 14.86 sky 14.5 14.5 14.5 S/N 17.4 28.1 31.1 S/N(c) 19.6 27.6 20.3 SN(E/C) 0.85
19910046	47	Red Green Blue z 18.95 znorm 14.77 sky 14.6 14.6 14.6 S/N 17.1 27.8 30.9 S/N(c) 18.6 26.2 19.4 SN(E/C) 0.85
19910047	47	Red Green Blue z 18.95 znorm 14.77 sky 14.5 14.5 14.6 S/N 17.9 28.5 31.5 S/N(c) 18.5 26.2 19.3 SN(E/C) 0.88