Hello , > If you think it is bad now imagine being an HF operator during the > Maunder Minimum. > >>From Wikipedia... > > The Maunder Minimum is the name given to the period roughly from > 1645 to 1715, when sunspots became exceedingly rare, as noted by > solar observers of the time. It is named after the solar astronomer > Edward W. Maunder (1851√1928) who discovered the dearth of sunspots > during that period by studying records from those years. During one > 30-year period within the Maunder Minimum, for example, astronomers > observed only about 50 sunspots, as opposed to a more typical 40,000√ > 50,000 spots. > > The Maunder Minimum occurred between 1645 and 1715 when only about > 50 spots appeared as opposed to the typical 40√50,000 spots. The > minima counts for 10-year periods from 1610√1681 are as follows: > > Decade Sunspots > 1610 9 > 1620 6 > 1630 9 > 1640 2 > 1650 3 > 1660 1 > 1670 0 > 1680 1 > > During the Maunder Minimum enough sunspots were sighted so that 11- > year cycles could be extrapolated from the count. The maxima > occurred in 1674, 1684, 1695, 1705 and 1716
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