2021-01-18 00:19:59UT (2021-01-18 09:19:59JST)  Solar Science Observatory NAOJ

P= -6.15, B0=-4.85, L0= 56.04, radius=976.1"
obs radius= 976.5 (pixel), p_thresh=-0.080, u_thresh=-0.290

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: p    S17.46 E75.47,   0.264,     50.41,     95.53,       4.41
     --------------------------------------------------------------------


dark:pcg20210118_091610_00 flat:pcg20210118_091711_01