New sunspot group 1057 appeared on March 23; by March 24, it was 38 times its original size. It covered 10 one-millionths of the solar hemisphere on Tuesday, and on Wednesday, it grew to 380 one-millionths. On Thursday, new sunspot group 1058 appeared, and the total area for both groups expanded to 401 millionths of the solar hemisphere. The total sunspot area has not been this large since February 8 when the total was 460 one-millionths (the numbers given for Wednesday are a revision of the numbers for the same day given in yesterday's ARRL Letter).
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