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Table 10

PT measurements of HST standard star magnitudes.

Star m u δ m u n u m g δ m g N g m r δ m r n r m i δ m i n i m z δ m z n z

G191B2B 11.045 0.031 7 11.461 0.011 7 12.014 0.011 7 12.397 0.010 7 12.743 0.005 7
GD153 12.693 0.020 6 13.055 0.018 6 13.570 0.006 6 13.943 0.010 6 14.296 0.021 6
GD71 12.439 0.016 6 12.753 0.011 7 13.242 0.012 7 13.610 0.005 7 13.967 0.023 7
P041C 13.569 0.015 11 12.260 0.010 11 11.842 0.009 11 11.718 0.024 11 11.702 0.011 11
P177D 15.120 0.017 13 13.746 0.010 13 13.299 0.009 13 13.158 0.008 13 13.126 0.009 13
P330E 14.551 0.018 17 13.281 0.009 17 12.842 0.007 17 12.701 0.007 17 12.672 0.013 17
BD+17° 4708 10.559 0.020 169 9.630 0.029 169 9.350 0.027 169 9.248 0.030 169 9.235 0.032 169

Notes.The HST CALSPEC stars are measured in the PT native system but reported in the SDSS 2.5 m (unprimed) system using canonical color transformations. For each filter x, we report the average magnitude mx, the standard deviation (not the error on the mean) δmx and the number of observations nx.

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