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)
18720039	94	Red Green Blue z 19.50 znorm 14.57 sky 14.8 14.4 14.6 S/N 20.1 28.9 34.6 S/N(c) 16.3 21.5 37.0 SN(E/C) 0.84
18720040	94	Red Green Blue z 19.45 znorm 14.52 sky 14.8 14.5 14.7 S/N 19.6 28.6 34.0 S/N(c) 15.7 20.6 36.3 SN(E/C) 0.85
18720041	94	Red Green Blue z 19.70 znorm 14.77 sky 15.2 14.9 15.0 S/N 22.2 32.7 38.3 S/N(c) 17.9 23.1 40.2 SN(E/C) 0.89
18720042	94	Red Green Blue z 19.45 znorm 14.52 sky 15.0 14.7 14.9 S/N 19.6 28.9 33.9 S/N(c) 15.7 20.1 35.0 SN(E/C) 0.89