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)
18500020	47	Red Green Blue z 18.70 znorm 14.52 sky 14.2 14.2 14.1 S/N 12.7 20.9 24.1 S/N(c) 52.1 19.0 15.3 SN(E/C) 0.94
18500021	47	Red Green Blue z 18.58 znorm 14.40 sky 14.4 14.2 14.2 S/N 11.6 19.6 21.9 S/N(c) 49.9 18.0 14.3 SN(E/C) 0.95
18500022	47	Red Green Blue z 18.68 znorm 14.50 sky 14.4 14.1 14.1 S/N 12.4 20.9 23.3 S/N(c) 51.9 18.8 15.0 SN(E/C) 0.97
18500023	47	Red Green Blue z 18.72 znorm 14.54 sky 14.4 14.2 14.1 S/N 13.1 21.8 24.0 S/N(c) 52.4 19.1 15.2 SN(E/C) 0.95
18500024	47	Red Green Blue z 18.79 znorm 14.61 sky 14.2 14.1 14.1 S/N 13.4 22.3 24.7 S/N(c) 54.6 19.8 15.8 SN(E/C) 0.92
18500025	47	Red Green Blue z 18.69 znorm 14.51 sky 14.2 14.1 14.2 S/N 12.3 21.0 22.9 S/N(c) 52.2 19.0 15.0 SN(E/C) 0.92
18500026	47	Red Green Blue z 18.70 znorm 14.52 sky 14.3 14.2 14.0 S/N 12.4 21.1 23.5 S/N(c) 53.4 18.9 15.2 SN(E/C) 0.92
18500027	47	Red Green Blue z 18.76 znorm 14.58 sky 14.2 14.2 14.2 S/N 12.6 21.8 23.9 S/N(c) 54.6 19.4 15.7 SN(E/C) 0.92