2018-03-31 00:28:12UT (2018-03-31 09:28:12JST)  Solar Science Observatory NAOJ

P=-26.09, B0=-6.61, L0=253.36, radius=961.5"
obs radius= 962.1 (pixel), p_thresh=-0.090, u_thresh=-0.320

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: p    S08.97 E61.12,   0.492,      6.88,      6.99,       0.74
     --------------------------------------------------------------------


dark:pcg20180331_123158_00 flat:pcg20180331_123253_01