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)
18530042	94	Red Green Blue z 19.72 znorm 14.78 sky 15.5 15.1 15.2 S/N 24.3 31.1 42.2 S/N(c) 24.3 0.5 13.2 SN(E/C) 0.25
18530043	94	Red Green Blue z 19.69 znorm 14.76 sky 15.5 15.2 15.3 S/N 24.0 30.9 41.7 S/N(c) 24.2 0.5 13.1 SN(E/C) 0.25
18530044	47	Red Green Blue z 18.83 znorm 14.65 sky 15.3 15.4 15.4 S/N 14.4 20.3 27.0 S/N(c) 16.2 0.4 9.2 SN(E/C) 0.26
18530045	47	Red Green Blue z 18.89 znorm 14.71 sky 15.2 15.1 15.2 S/N 15.1 21.1 28.1 S/N(c) 17.0 0.4 9.6 SN(E/C) 0.33