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)
18270012	47	Red Green Blue z 19.21 znorm 15.03 sky 14.8 14.6 14.7 S/N 17.9 28.4 32.7 S/N(c) 8.9 10.1 8.6 SN(E/C) 0.84
18270013	47	Red Green Blue z 19.22 znorm 15.04 sky 14.8 15.2 14.9 S/N 17.7 28.2 32.7 S/N(c) 8.8 10.1 8.6 SN(E/C) 0.87
18270014	47	Red Green Blue z 19.20 znorm 15.02 sky 15.3 15.0 14.8 S/N 17.3 27.4 31.9 S/N(c) 8.7 10.1 8.5 SN(E/C) 0.89
18270015	47	Red Green Blue z 19.16 znorm 14.98 sky 14.9 15.0 14.9 S/N 16.9 27.2 31.3 S/N(c) 8.6 9.9 8.4 SN(E/C) 0.91