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)
18540022	94	Red Green Blue z 19.82 znorm 14.89 sky 15.0 14.5 14.5 S/N 27.8 39.5 43.8 S/N(c) 43.6 60.3 35.0 SN(E/C) 0.86
18540023	94	Red Green Blue z 19.87 znorm 14.94 sky 15.0 14.6 14.5 S/N 28.6 40.8 45.2 S/N(c) 44.2 60.6 34.8 SN(E/C) 0.79
18540024	94	Red Green Blue z 19.88 znorm 14.95 sky 14.9 14.6 14.4 S/N 28.5 40.7 44.6 S/N(c) 44.7 60.6 34.9 SN(E/C) 0.84
18540025	94	Red Green Blue z 19.92 znorm 14.99 sky 15.0 14.7 14.4 S/N 28.8 41.4 45.3 S/N(c) 45.3 61.4 35.3 SN(E/C) 0.87