MDI data courtesy of Xudong Sun and Todd Hoeksema

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MDI data courtesy of Xudong Sun and Todd Hoeksema
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Mar 26 2008
Mar 28 2008
Between Mar 22 and Mar 25 2008, three low-
latitude, old-cycle ARs 10987, 10988 and 10989
- emerged in the South and dominated magnetically
CR 2068. They had relatively low magnetic
complexity (b-type) but significant area.
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CR spotless mean mean mean
B days ssn F10.7 south
north 2066 23 1.83 66.7 4.5 4.9 2067
19 2.46 68.4 4.4 4.3 2068 14 10.6
73.5 5.7 4.3 2069 21 1.93 69.2
4.6 4.5 2070 20 3.07 69.3 4.5 4.5
1915 22 2.52 68.9 8.0 11.7 Max.
combined area of WHI active regions 726 mill. of
hemisphere on Mar 26, largest in 2008
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Polar fields are lower than during previous
minimum in 1996