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)
8740017	47	Red Green Blue z 13.69 znorm 9.51 sky 12.8 12.8 12.8 S/N 0.1 -0.0 -0.3 S/N(c) 0.0 0.0 0.0 SN(E/C)-9.83
8740018	47	Red Green Blue z 13.91 znorm 9.73 sky 12.5 12.5 12.6 S/N 0.0 0.3 -0.5 S/N(c) 0.0 0.0 0.0 SN(E/C)-5.10