INDICES OF GEOMAGNETIC ACTIVITY


UPPSALA Observatory, Sweden           Scale-values of variometers

SEPTEMBER   2024                   X= 0.0010   Y= 0.0010 nT/digit

Range for K=9 :  600 nT

    GR      K- INDICES FOR THREE-HOUR INTERVAL

    DAY     1   2   3   4       5   6   7   8       SUM		 Ak   C(9)  DAY

     2      2   2   1   2       3   3   3   2        18		 10    2     2
     3      1   2   2   3       2   2   1   1        14		  6    1     3
     4      1   0   3   5       5   3   2   2        21		 18    5     4
     5      1   2   1   2       2   2   1   2        13		  6    1     5

     6      0   0   2   3       4   2   1   3        15		  9    2     6


K index Last Reached
9     2024 AUGUST 12   15--18 UT
8     2024 AUGUST 12   12--15 UT
7     2024 AUGUST 12   21--24 UT
6     2024 AUGUST 30   18--21 UT
5     2024 SEPTEMBER 04   12--15 UT
4     2024 SEPTEMBER 06   12--15 UT
3     2024 SEPTEMBER 06   21--24 UT
2     2024 SEPTEMBER 06   15--18 UT
1     2024 SEPTEMBER 06   18--21 UT
0     2024 SEPTEMBER 06   03--06 UT

C(9) index Last Reached
9     2024 AUGUST 12
8     2024 APRIL 19
7     2024 AUGUST 04
6     2024 AUGUST 31
5     2024 SEPTEMBER 04
4     2024 SEPTEMBER 01
3     2024 AUGUST 24
2     2024 SEPTEMBER 06
1     2024 SEPTEMBER 05
0     2024 JULY 13