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)
19890010	94	Red Green Blue z 19.64 znorm 14.71 sky 14.2 14.1 14.0 S/N 24.0 34.5 38.9 S/N(c) 22.3 29.8 19.5 SN(E/C) 0.21
19890011	94	Red Green Blue z 19.57 znorm 14.64 sky 14.3 14.2 14.1 S/N 22.9 33.4 37.7 S/N(c) 22.4 29.3 19.4 SN(E/C) 0.23
19890012	94	Red Green Blue z 19.88 znorm 14.94 sky 14.3 14.3 14.2 S/N 26.6 38.5 43.8 S/N(c) 25.9 33.7 22.3 SN(E/C) 0.20
19890013	94	Red Green Blue z 19.86 znorm 14.93 sky 14.3 14.2 14.1 S/N 26.2 37.8 42.9 S/N(c) 25.6 33.6 22.0 SN(E/C) 0.19