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)
19690026	47	Red Green Blue z 18.16 znorm 13.98 sky 13.5 13.4 13.3 S/N 10.9 16.7 20.1 S/N(c) 13.8 12.1 19.7 SN(E/C) 0.54
19690027	47	Red Green Blue z 18.29 znorm 14.11 sky 13.6 13.5 13.4 S/N 11.6 18.1 21.5 S/N(c) 15.6 13.7 22.2 SN(E/C) 0.50
19690028	47	Red Green Blue z 17.35 znorm 13.17 sky 13.3 13.2 13.1 S/N 5.8 10.0 11.8 S/N(c) 8.4 7.8 12.8 SN(E/C) 0.72
19690029	47	Red Green Blue z 16.50 znorm 12.32 sky 12.9 12.9 12.9 S/N 2.6 4.8 5.8 S/N(c) 4.4 4.4 7.3 SN(E/C) 0.95