The data at the end of last week's bulletin showed daily sunspot numbers from April 16-22 as six zeros, then 11. In fact, every day was at zero until April 21, when it was 11; it moved again to zero the next day, April 22. We had just as many zero sunspot days -- and only one day with a sunspot -- but we saw the sunspot on Tuesday, April 21, not April 22.
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