The Sun activity increases during every ...

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Solar cycles have an average duration of about 11 years. The periodic changes in the Sun's activity include changes of the levels of solar radiation and the number and size of sunspots.
Katarzyna Dąbrowska
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flagFrance
5%
73%
10%
10%
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flagAustria
20%
68%
2%
8%
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flagGreece
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60%
5%
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flagthe Netherlands
8%
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25%
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flagRepublic of Ireland
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16%
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flagGermany
13%
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15%
15%
405
flagPakistan
12%
54%
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12%
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flagCanada
19%
52%
14%
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flagthe United Kingdom
12%
50%
19%
17%
125
flagSwitzerland
5%
50%
20%
20%
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flagthe United States
13%
49%
19%
17%
234
flagAustralia
11%
48%
11%
23%
43
flagIndia
19%
44%
13%
21%
382
flagPoland
12%
42%
19%
25%
8078
flagthe United Arab Emirates
20%
40%
6%
33%
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flagthe Philippines
18%
31%
21%
28%
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flagUnknown
18%
31%
31%
18%
16