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)
18780057	94	Red Green Blue z 19.37 znorm 14.44 sky 14.3 14.1 13.9 S/N 20.6 30.2 33.9 S/N(c) 22.6 33.6 0.2 SN(E/C) 0.37
18780058	94	Red Green Blue z 19.56 znorm 14.63 sky 14.3 14.1 13.9 S/N 22.8 33.4 37.3 S/N(c) 25.3 37.3 0.2 SN(E/C) 0.33