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)
21720057	47	Red Green Blue z 19.19 znorm 15.01 sky 13.6 13.8 13.8 S/N 15.5 22.8 26.3 S/N(c) 18.2 20.6 20.6 SN(E/C) 0.73
21720058	47	Red Green Blue z 19.19 znorm 15.01 sky 13.5 13.7 13.7 S/N 15.1 22.5 26.3 S/N(c) 18.0 20.4 20.5 SN(E/C) 0.73
21720059	47	Red Green Blue z 19.11 znorm 14.93 sky 13.3 13.6 13.5 S/N 14.0 21.1 24.7 S/N(c) 17.3 19.7 19.7 SN(E/C) 0.78
21720060	47	Red Green Blue z 19.14 znorm 14.96 sky 13.3 13.7 13.6 S/N 14.5 21.5 25.1 S/N(c) 17.7 20.0 20.0 SN(E/C) 0.77