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)
19750041	42	Red Green Blue z 18.10 znorm 14.05 sky 14.4 14.3 14.5 S/N 7.5 12.7 15.5 S/N(c) 10.9 16.1 12.2 SN(E/C) 0.58
19750042	42	Red Green Blue z 18.12 znorm 14.06 sky 14.5 14.4 14.7 S/N 6.7 11.7 14.8 S/N(c) 10.7 16.1 12.2 SN(E/C) 0.59