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)
19020018	94	Red Green Blue z 19.85 znorm 14.92 sky 14.9 14.7 14.7 S/N 27.0 37.8 46.0 S/N(c) 23.0 55.5 57.0 SN(E/C) 0.63
19020019	94	Red Green Blue z 19.86 znorm 14.92 sky 15.0 14.9 14.9 S/N 26.9 38.4 45.8 S/N(c) 23.1 55.5 56.5 SN(E/C) 0.61
19020020	94	Red Green Blue z 19.92 znorm 14.99 sky 15.1 15.1 14.9 S/N 27.6 39.8 46.4 S/N(c) 23.9 56.3 57.1 SN(E/C) 0.60
19020021	94	Red Green Blue z 19.93 znorm 14.99 sky 15.1 14.9 15.0 S/N 27.2 40.0 46.7 S/N(c) 24.1 57.0 58.2 SN(E/C) 0.56