2021-04-04 00:12:39UT (2021-04-04 09:12:39JST)  Solar Science Observatory NAOJ

P=-26.24, B0=-6.37, L0=134.87, radius=959.2"
obs radius= 961.3 (pixel), p_thresh=-0.110, u_thresh=-0.380

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: pu   N19.80 W23.39,   0.821,     44.43,     27.07,      12.71
       2: p    N19.84 W21.05,   0.835,      4.48,      2.68,       1.00
       3: p    N20.38 W20.70,   0.833,      1.38,      0.83,       0.19
       4: u  1 N19.81 W23.37,   0.821,      8.27,      5.04,       3.84
     --------------------------------------------------------------------


dark:pcg20210403_083319_00 flat:pcg20210403_083424_01