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)
21740042	47	Red Green Blue z 18.43 znorm 14.25 sky 13.3 13.7 13.6 S/N 10.5 16.8 21.4 S/N(c) 9.7 12.0 63.0 SN(E/C) 0.00
21740043	47	Red Green Blue z 18.47 znorm 14.29 sky 13.4 13.8 13.7 S/N 10.4 17.0 21.3 S/N(c) 9.8 12.2 64.2 SN(E/C) 0.00