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)
19890041	47	Red Green Blue z 18.94 znorm 14.76 sky 14.2 14.2 14.5 S/N 13.5 21.4 27.6 S/N(c) 37.7 26.7 17.8 SN(E/C) 0.88
19890042	47	Red Green Blue z 19.09 znorm 14.91 sky 14.3 14.2 14.4 S/N 15.0 23.3 30.2 S/N(c) 40.2 28.2 19.2 SN(E/C) 0.84
19890043	47	Red Green Blue z 19.10 znorm 14.92 sky 14.1 14.0 14.0 S/N 15.2 22.9 29.6 S/N(c) 40.2 28.3 19.1 SN(E/C) 0.82
19890044	47	Red Green Blue z 19.16 znorm 14.98 sky 13.6 13.4 13.3 S/N 15.2 22.7 29.3 S/N(c) 41.1 28.9 19.7 SN(E/C) 0.80