2026-01-31 02:23:52UT (2026-01-31 11:23:52JST)  Solar Science Observatory NAOJ

P=-11.78, B0=-5.94, L0=262.76, radius=973.7"
obs radius= 967.1 (pixel), p_thresh=-0.075, u_thresh=-0.275

     ***** Observed Sunspot Parameters *****
     --------------------------------------------------------------------------
                                       10^-6 disk 10^-6 hemis. -10^-6 B_t Group
      No. p/u    position       cos(t)    ap_area    co_area    darkness    id
     --------------------------------------------------------------------------
       1: p    S15.39 W75.13,   0.274,      3.40,      6.22,       0.19     1
       2: pu   S14.11 W72.71,   0.312,     48.66,     77.99,       5.01     1
       3: p    S12.93 W53.09,   0.605,     20.42,     16.86,       2.43     2
       4: p    S13.70 W48.70,   0.662,      8.17,      6.17,       0.92     2
       5: p    S15.28 E24.37,   0.901,     11.57,      6.42,       1.49     5
       6: pu   S17.26 E57.52,   0.541,    155.52,    143.79,      28.18     6
       7: p    N14.07 E19.93,   0.882,      2.38,      1.35,       0.23     4
       8: p    N13.07 E59.31,   0.471,     15.31,     16.25,       1.41     7
       9: p    N14.37 E61.43,   0.435,     52.41,     60.23,       6.38     7
      10: p    N13.96 E57.52,   0.493,      5.10,      5.17,       0.38     7
      11: p    N21.21 E03.47,   0.888,     17.36,      9.77,       1.98     3
      12: p    N15.06 E63.85,   0.396,      6.81,      8.59,       0.51     7
      13: u  2 S14.23 W72.61,   0.314,      4.76,      7.60,       0.96     1
      14: u  6 S17.22 E57.51,   0.541,     36.75,     33.97,      12.85     6
     --------------------------------------------------------------------------
    * = False spots
     ----------------------------------------
           10^-6 disk 10^-6 hemis. -10^-6 B_t
     Region   ap_area   co_area    darkness
 
     North       99.37   101.37     10.90
 
     South      247.74   257.45     38.23
 
     Whole      347.12   358.82     49.13
 
     ----------------------------------------


     ***** Observed Group Parameters ***** 
     ---------------------------------------------------------------------
      No.   position    Carr.Lon.      f    center cos(t) ap_area  co_area
     ---------------------------------------------------------------------
       1: S14.56 W73.49, 336.25,       3,       0, 0.300,   52.07,   84.21
       2: S13.27 W51.17, 313.92,       2,       0, 0.631,   28.59,   23.03
       3: N21.21 E03.47, 259.29,       1,       1, 0.888,   17.36,    9.77
       4: N14.07 E19.93, 242.83,       1,       1, 0.882,    2.38,    1.35
       5: S15.28 E24.37, 238.39,       1,       1, 0.901,   11.57,    6.42
       6: S17.24 E57.52, 205.24,       2,       0, 0.541,  155.52,  143.79
       7: N14.10 E60.75, 202.00,       4,       0, 0.446,   79.63,   90.25
     ---------------------------------------------------------------------


     *****   Relative Sunspot Numbers   ***** 
     ------------------------------------------
     Region     g           f         10*g + f 
     ------------------------------------------

     North      3           6          36

     South      4           8          48

     Whole      7          14          84

     ------------------------------------------

     Center     3           3          33


dark:pcg20260131_092516_00 flat:pcg20260131_091934_01