M
T
W
T
F
S
S
21 may
+18
+8
22
+21
+9
23
+23
+10
24
+23
+11
+23
min: +11
+26
+16
+25
+13
+25
+13
+26
+14
+28
+15
+28
+18
+26
+18
+27
+15
+29
+18
4
+24
+17
5
+26
+17
6
+26
+19
7
+22
+13
8
+12
+10
9
+15
+10
10
+24
+14
11
+26
+14
12
+18
+14
13
+18
+12
14
+21
+13
15
+18
+13
16
+23
+12
17
+29
+16
18
+26
+23
19
+26
+17
20
+25
+19
21
+25
+18
22
+25
+14
23
+28
+16
24

Geomagnetic field

F, 25 may
2 points
Small perturbations
S, 26 may
2 points
Small perturbations
S, 27 may
2 points
Small perturbations