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)
17870074	47	Red Green Blue z 19.17 znorm 14.99 sky 14.8 14.4 15.3 S/N 18.2 27.4 31.7 S/N(c) 25.0 31.7 13.5 SN(E/C) 0.87
17870075	47	Red Green Blue z 19.05 znorm 14.87 sky 14.8 14.6 15.0 S/N 17.0 26.1 29.9 S/N(c) 23.6 30.0 12.8 SN(E/C) 0.91
17870076	47	Red Green Blue z 18.85 znorm 14.66 sky 14.5 14.3 14.5 S/N 14.3 23.4 26.3 S/N(c) 20.4 26.5 11.5 SN(E/C) 0.96
17870077	47	Red Green Blue z 18.59 znorm 14.41 sky 14.4 14.2 14.4 S/N 12.5 20.3 22.3 S/N(c) 17.5 23.1 9.9 SN(E/C) 0.97