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)
1660046	50	Red Green Blue z 18.99 znorm 14.74 sky 10.4 10.3 10.2 S/N 11.3 14.1 13.1 S/N(c) 10.6 13.6 13.7 SN(E/C) 0.87
1660047	50	Red Green Blue z 18.92 znorm 14.67 sky 10.4 10.3 10.2 S/N 11.1 14.0 12.5 S/N(c) 10.5 13.0 13.3 SN(E/C) 0.84
1660048	50	Red Green Blue z 18.94 znorm 14.70 sky 10.4 10.3 10.2 S/N 10.7 13.4 12.3 S/N(c) 10.5 13.1 13.1 SN(E/C) 0.88