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)
19990023	47	Red Green Blue z 19.04 znorm 14.86 sky 14.9 14.6 14.9 S/N 12.4 21.2 23.1 S/N(c) 9.5 18.1 10.0 SN(E/C) 0.75
19990024	47	Red Green Blue z 19.07 znorm 14.89 sky 14.8 14.7 15.1 S/N 13.0 21.7 23.6 S/N(c) 9.9 18.4 10.3 SN(E/C) 0.73
19990025	47	Red Green Blue z 19.06 znorm 14.88 sky 14.7 14.8 15.2 S/N 12.3 21.2 22.7 S/N(c) 9.7 18.2 10.1 SN(E/C) 0.75
19990026	47	Red Green Blue z 19.11 znorm 14.93 sky 14.6 14.7 14.9 S/N 13.2 22.7 24.6 S/N(c) 10.1 18.8 10.5 SN(E/C) 0.75
19990027	47	Red Green Blue z 19.14 znorm 14.95 sky 14.4 14.6 14.7 S/N 12.5 21.3 23.1 S/N(c) 10.2 18.8 10.5 SN(E/C) 0.75
19990028	47	Red Green Blue z 19.10 znorm 14.92 sky 13.5 13.4 13.1 S/N 10.4 18.1 18.8 S/N(c) 9.4 18.0 9.9 SN(E/C) 0.73