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)
19890019	42	Red Green Blue z 18.37 znorm 14.31 sky 14.7 14.6 14.7 S/N 11.3 19.3 20.3 S/N(c) 15.1 20.3 13.1 SN(E/C) 0.83
19890020	42	Red Green Blue z 18.45 znorm 14.39 sky 14.7 14.6 14.7 S/N 11.5 20.2 21.2 S/N(c) 15.6 21.2 13.7 SN(E/C) 0.85
19890021	42	Red Green Blue z 18.53 znorm 14.48 sky 14.7 14.7 14.9 S/N 16.1 25.6 27.5 S/N(c) 17.1 22.2 15.1 SN(E/C) 0.80
19890022	42	Red Green Blue z 18.50 znorm 14.44 sky 14.7 14.6 14.6 S/N 15.8 25.0 26.5 S/N(c) 17.0 21.9 14.6 SN(E/C) 0.85
19890023	42	Red Green Blue z 18.42 znorm 14.36 sky 14.9 14.9 14.7 S/N 8.5 15.7 16.6 S/N(c) 15.2 20.4 13.5 SN(E/C) 0.87
19890024	42	Red Green Blue z 18.31 znorm 14.25 sky 14.7 14.7 14.6 S/N 7.5 14.3 15.1 S/N(c) 14.5 19.7 12.9 SN(E/C) 0.89
19890025	42	Red Green Blue z 18.51 znorm 14.46 sky 14.5 14.6 14.5 S/N 11.8 20.1 21.3 S/N(c) 15.8 21.7 14.2 SN(E/C) 0.89
19890026	42	Red Green Blue z 18.54 znorm 14.48 sky 14.8 14.6 14.7 S/N 11.9 20.3 21.8 S/N(c) 16.3 22.0 14.4 SN(E/C) 0.90
19890027	42	Red Green Blue z 18.59 znorm 14.53 sky 14.8 14.7 14.7 S/N 16.1 25.2 27.1 S/N(c) 17.8 23.4 15.1 SN(E/C) 0.87
19890028	42	Red Green Blue z 18.66 znorm 14.60 sky 14.7 14.7 14.7 S/N 16.4 25.7 27.4 S/N(c) 18.4 24.0 15.6 SN(E/C) 0.92
19890029	42	Red Green Blue z 18.21 znorm 14.15 sky 14.6 14.9 14.8 S/N 6.2 12.0 12.4 S/N(c) 13.5 18.7 12.3 SN(E/C) 0.81
19890030	42	Red Green Blue z 18.08 znorm 14.02 sky 14.8 14.7 14.7 S/N 4.7 9.9 10.3 S/N(c) 12.6 17.6 11.6 SN(E/C) 0.88