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)
21720081	94	Red Green Blue z 19.74 znorm 14.81 sky 14.3 14.2 14.2 S/N 20.6 29.5 33.8 S/N(c) 33.4 36.9 41.3 SN(E/C) 0.00
21720082	94	Red Green Blue z 19.54 znorm 14.60 sky 14.3 14.4 14.3 S/N 18.8 26.8 31.1 S/N(c) 29.3 33.4 36.7 SN(E/C) 0.00
21720083	94	Red Green Blue z 19.72 znorm 14.79 sky 14.3 14.5 14.4 S/N 20.3 29.1 34.6 S/N(c) 31.9 36.4 39.8 SN(E/C) 0.00
21720084	94	Red Green Blue z 19.75 znorm 14.82 sky 14.4 14.6 14.4 S/N 20.5 29.4 35.0 S/N(c) 31.6 36.6 39.6 SN(E/C) 0.00