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The top documents tagged [factorswolf number]
How Well Do We Know the Sunspot Number? [And what we are doing to answer that question]
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![How Well Do We Know the Sunspot Number? [And what we are doing to answer that question]](https://static.fdocuments.us/doc/330x215/56813cc5550346895da67093/how-well-do-we-know-the-sunspot-number-and-what-we-are-doing-to-answer-that.jpg)
