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)
18120030	47	Red Green Blue z 18.88 znorm 14.70 sky 14.7 14.6 14.7 S/N 12.8 21.9 24.2 S/N(c) 11.6 15.4 14.4 SN(E/C) 0.82
18120031	47	Red Green Blue z 18.86 znorm 14.68 sky 14.8 14.7 15.2 S/N 12.3 21.7 23.6 S/N(c) 11.4 15.3 14.1 SN(E/C) 0.88
18120032	47	Red Green Blue z 18.80 znorm 14.62 sky 15.0 14.8 14.8 S/N 12.0 20.8 22.9 S/N(c) 11.1 15.0 13.8 SN(E/C) 0.87
18120033	47	Red Green Blue z 18.79 znorm 14.61 sky 15.2 14.8 14.8 S/N 12.1 20.6 22.5 S/N(c) 10.9 14.9 13.7 SN(E/C) 0.91