2017-02-17 00:40:48UT (2017-02-17 09:40:48JST)  Solar Observatory NAOJ

P=-18.11, B0=-6.91, L0=224.28, radius=971.9"
obs radius= 971.5 (pixel), p_thresh=-0.095, u_thresh=-0.335

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: p    N11.58 E42.01,   0.698,      9.11,      6.52,       1.46
     --------------------------------------------------------------------


dark:pcg20170217_093820_00 flat:pcg20170217_093913_01