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)
18870064	94	Red Green Blue z 19.87 znorm 14.94 sky 15.1 14.7 14.9 S/N 26.0 37.5 44.2 S/N(c) 51.9 12.6 51.8 SN(E/C) 0.30
18870065	94	Red Green Blue z 19.90 znorm 14.96 sky 15.1 14.9 14.9 S/N 26.2 37.9 44.7 S/N(c) 53.2 13.0 52.3 SN(E/C) 0.27
18870066	94	Red Green Blue z 19.89 znorm 14.96 sky 15.0 14.9 15.0 S/N 26.1 37.8 44.3 S/N(c) 52.7 13.0 51.8 SN(E/C) 0.27
18870067	94	Red Green Blue z 19.95 znorm 15.02 sky 15.1 15.0 14.8 S/N 27.0 39.0 45.8 S/N(c) 53.7 13.2 52.9 SN(E/C) 0.28