| Sunspots do not appear everywhere on the Sun. They are usually concentrated in two bands, about 15 - 20 degrees wide in latitude, that go around the Sun on either side of the solar equator, and the average latitude of those bands varies with the solar cycle. Just after the minimum of the solar cycle, sunspots appear at an average latitude of about 25 - 30 degrees. As the solar cycle progresses, newer sunspots appear closer and closer to the equator, and the last sunspots of the solar cycle appear at an average latitude of about 5 - 10 degrees. This behavior is sometimes called Spoerer's Law. It is very rare to ever find sunspots at latitudes above 70 degrees. Our cycle as shown below is 11 year. |
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