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)
19990011	47	Red Green Blue z 18.84 znorm 14.66 sky 14.1 14.2 14.4 S/N 7.9 14.6 16.0 S/N(c) 19.7 15.3 22.3 SN(E/C) 0.82
19990012	47	Red Green Blue z 19.07 znorm 14.89 sky 14.4 14.4 14.4 S/N 8.9 15.8 17.7 S/N(c) 22.0 17.1 24.8 SN(E/C) 0.77