2018-02-28 02:19:45UT (2018-02-28 11:19:45JST)  Solar Science Observatory NAOJ

P=-21.26, B0=-7.20, L0=300.94, radius=969.6"
obs radius= 971.0 (pixel), p_thresh=-0.060, u_thresh=-0.230

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: p    N07.07 W27.57,   0.857,     14.18,      8.27,       1.83
     --------------------------------------------------------------------


dark:pcg20180228_090838_00 flat:pcg20180228_090930_01