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)
18740046	94	Red Green Blue z 19.70 znorm 14.77 sky 14.8 14.4 14.6 S/N 25.8 37.1 42.1 S/N(c) 43.8 46.2 66.1 SN(E/C) 0.89
18740047	94	Red Green Blue z 19.68 znorm 14.74 sky 14.9 14.6 14.6 S/N 24.4 35.5 40.2 S/N(c) 42.6 45.7 63.9 SN(E/C) 0.91
18740048	94	Red Green Blue z 19.67 znorm 14.73 sky 14.8 14.7 14.6 S/N 24.1 35.1 39.7 S/N(c) 42.1 45.3 65.1 SN(E/C) 0.81
18740049	94	Red Green Blue z 19.63 znorm 14.69 sky 14.9 14.6 14.6 S/N 23.2 34.0 38.1 S/N(c) 41.0 45.8 62.8 SN(E/C) 0.83