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)
18740028	94	Red Green Blue z 19.80 znorm 14.87 sky 14.8 14.5 14.5 S/N 28.3 40.1 45.2 S/N(c) 8.8 36.5 30.8 SN(E/C) 0.16
18740029	94	Red Green Blue z 19.82 znorm 14.89 sky 14.8 14.6 14.6 S/N 28.6 40.8 46.0 S/N(c) 8.8 37.0 30.5 SN(E/C) 0.16
18740030	94	Red Green Blue z 19.88 znorm 14.95 sky 14.8 14.7 14.6 S/N 29.3 42.0 47.0 S/N(c) 9.0 38.6 31.2 SN(E/C) 0.15
18740031	94	Red Green Blue z 19.91 znorm 14.98 sky 14.9 14.7 14.7 S/N 29.7 42.7 48.3 S/N(c) 9.0 39.3 32.0 SN(E/C) 0.15