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)
19980022	94	Red Green Blue z 18.57 znorm 13.63 sky 14.7 14.5 14.6 S/N 15.5 21.1 25.9 S/N(c) 12.8 26.5 16.3 SN(E/C) 0.88
19980023	94	Red Green Blue z 18.76 znorm 13.83 sky 14.7 14.6 14.7 S/N 17.7 24.0 29.5 S/N(c) 14.7 29.9 18.6 SN(E/C) 0.83
19980024	94	Red Green Blue z 18.78 znorm 13.85 sky 14.8 14.7 14.7 S/N 17.6 23.9 29.7 S/N(c) 14.9 30.1 18.8 SN(E/C) 0.88
19980025	94	Red Green Blue z 19.00 znorm 14.07 sky 14.9 14.9 14.9 S/N 19.9 26.7 33.3 S/N(c) 16.2 32.3 20.1 SN(E/C) 0.79