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)
19910060	42	Red Green Blue z 18.01 znorm 13.95 sky 14.4 14.3 14.5 S/N 7.5 13.5 15.6 S/N(c) 12.7 15.3 5.0 SN(E/C) 0.72
19910061	42	Red Green Blue z 17.96 znorm 13.90 sky 14.5 14.6 14.7 S/N 7.6 13.7 15.6 S/N(c) 12.0 14.8 4.8 SN(E/C) 0.74
19910062	42	Red Green Blue z 18.66 znorm 14.61 sky 14.6 14.4 14.5 S/N 12.9 21.1 23.9 S/N(c) 19.3 21.8 7.1 SN(E/C) 0.58
19910063	42	Red Green Blue z 18.59 znorm 14.53 sky 14.7 14.5 14.5 S/N 12.6 20.3 23.1 S/N(c) 18.9 21.3 6.9 SN(E/C) 0.60