Geomagnetic —Āonditions
Insignificant disturbances

2points

Su, 17 dec Mo, 18 dec Tu, 19 dec
1:00 2 4 3
4:00 2 3 3
7:00 2 3 3
10:00 3 2 2
13:00 3 3 3
16:00 3 3 3
19:00 4 4
22:00 4 4
1 No significant disturbances
2 Insignificant disturbances
3 Weak geomagnetic storm
4 Minor geomagnetic storm
5 Moderate geomagnetic storm
6 Strong geomagnetic storm
7 Hard geomagnetic storm
8 Extreme storm