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)
18420037	47	Red Green Blue z 18.18 znorm 14.00 sky 14.8 14.4 14.7 S/N 8.3 14.9 17.1 S/N(c) 10.9 4.7 5.8 SN(E/C) 0.92
18420038	47	Red Green Blue z 18.25 znorm 14.07 sky 14.7 14.6 14.8 S/N 8.5 15.7 17.6 S/N(c) 11.4 4.8 6.1 SN(E/C) 0.90
18420039	47	Red Green Blue z 17.96 znorm 13.78 sky 14.8 14.5 14.6 S/N 6.9 12.7 14.5 S/N(c) 9.2 4.1 5.1 SN(E/C) 0.97
18420040	47	Red Green Blue z 17.67 znorm 13.49 sky 14.9 14.6 14.8 S/N 5.4 10.6 11.7 S/N(c) 7.4 3.5 4.3 SN(E/C) 0.99