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)
18730031	94	Red Green Blue z 19.87 znorm 14.94 sky 15.0 14.7 14.9 S/N 29.4 41.6 48.2 S/N(c) 28.4 47.9 40.8 SN(E/C) 0.85
18730032	94	Red Green Blue z 19.83 znorm 14.90 sky 15.0 14.9 15.0 S/N 28.6 41.1 47.4 S/N(c) 28.2 49.7 39.6 SN(E/C) 0.76
18730033	94	Red Green Blue z 19.81 znorm 14.88 sky 15.0 14.9 14.8 S/N 28.3 40.9 46.9 S/N(c) 27.5 48.8 39.4 SN(E/C) 0.89
18730034	94	Red Green Blue z 19.80 znorm 14.87 sky 14.9 14.8 14.7 S/N 28.1 40.8 46.9 S/N(c) 27.1 47.3 39.1 SN(E/C) 0.81