2018-08-31 00:00:30UT (2018-08-31 09:00:30JST)  Solar Science Observatory NAOJ

P=+20.76, B0=+7.17, L0= 30.48, radius=951.3"
obs radius= 951.7 (pixel), p_thresh=-0.095, u_thresh=-0.335

     ***** Observed Sunspot Parameters *****
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               no sunspot


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dark:pcg20180831_085805_00 flat:pcg20180831_085900_01