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)
18100020	42	Red Green Blue z 18.09 znorm 14.04 sky 15.0 14.7 14.8 S/N 7.5 14.1 14.7 S/N(c) 8.8 13.9 6.5 SN(E/C) 0.57
18100021	42	Red Green Blue z 18.17 znorm 14.11 sky 15.4 15.1 15.0 S/N 7.6 14.3 15.3 S/N(c) 9.0 14.4 6.8 SN(E/C) 0.57
18100022	42	Red Green Blue z 18.18 znorm 14.13 sky 15.0 15.1 14.9 S/N 7.1 14.1 14.5 S/N(c) 8.9 14.6 6.7 SN(E/C) 0.54
18100023	42	Red Green Blue z 18.11 znorm 14.05 sky 15.4 15.2 15.0 S/N 7.2 13.8 15.0 S/N(c) 8.6 14.0 6.5 SN(E/C) 0.60