2017-02-18 01:20:47UT (2017-02-18 10:20:47JST)  Solar Observatory NAOJ

P=-18.43, B0=-6.95, L0=210.75, radius=971.7"
obs radius= 972.9 (pixel), p_thresh=-0.045, u_thresh=-0.200

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------
                                          10^-6 hemisphere     -10^-6 B_t
      No. p/u    position       cos(t)    ap_area    co_area    darkness 
     --------------------------------------------------------------------
       1: p    N10.11 E29.68,   0.828,      4.04,      2.44,       0.32
     --------------------------------------------------------------------


dark:pcg20170217_093820_00 flat:pcg20170217_093913_01