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)
18520026	47	Red Green Blue z 18.67 znorm 14.49 sky 14.7 14.4 14.8 S/N 13.3 18.4 25.0 S/N(c) 15.8 0.3 8.6 SN(E/C) 0.28
18520027	47	Red Green Blue z 18.77 znorm 14.59 sky 15.4 14.9 14.9 S/N 13.2 18.5 25.1 S/N(c) 15.9 0.4 8.7 SN(E/C) 0.29
18520028	47	Red Green Blue z 18.77 znorm 14.59 sky 15.1 14.9 14.8 S/N 13.2 18.7 25.0 S/N(c) 15.9 0.4 8.7 SN(E/C) 0.26
18520029	47	Red Green Blue z 18.85 znorm 14.67 sky 14.7 14.7 15.0 S/N 13.8 19.2 26.0 S/N(c) 16.6 0.4 9.0 SN(E/C) 0.27
18520030	47	Red Green Blue z 18.80 znorm 14.62 sky 15.0 15.0 15.0 S/N 13.4 19.0 25.4 S/N(c) 16.2 0.4 8.9 SN(E/C) 0.28
18520031	47	Red Green Blue z 18.72 znorm 14.54 sky 15.0 15.1 14.9 S/N 13.2 18.6 24.8 S/N(c) 15.3 0.3 8.4 SN(E/C) 0.28
18520032	47	Red Green Blue z 18.63 znorm 14.45 sky 15.1 15.0 14.9 S/N 12.4 17.8 23.7 S/N(c) 14.8 0.3 8.1 SN(E/C) 0.29
18520033	47	Red Green Blue z 18.61 znorm 14.43 sky 15.0 15.0 14.9 S/N 12.3 17.6 23.3 S/N(c) 14.5 0.3 8.0 SN(E/C) 0.30