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)
1660039	50	Red Green Blue z 18.96 znorm 14.71 sky 12.1 12.0 12.0 S/N 16.1 22.3 24.9 S/N(c) 14.9 20.8 23.5 SN(E/C) 0.51
1660040	50	Red Green Blue z 19.09 znorm 14.84 sky 12.2 12.1 12.1 S/N 17.4 24.1 26.6 S/N(c) 16.1 22.5 25.1 SN(E/C) 0.48
1660041	50	Red Green Blue z 19.07 znorm 14.82 sky 12.3 12.2 12.1 S/N 17.2 23.7 26.2 S/N(c) 15.8 22.4 25.0 SN(E/C) 0.44
1660042	50	Red Green Blue z 18.98 znorm 14.73 sky 12.3 12.3 12.2 S/N 16.2 22.7 25.3 S/N(c) 15.0 21.4 24.1 SN(E/C) 0.48