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Wolf Wolfer transition sunspot number

Sunspot Series Version 2.3

Reconstructed SN from 1816-1944 : daily, monthly and yearly values respectively.

Sunspot number V2.3 Daily

Columns are detailed in the first lines of the CSV file

Sunspot number V2.3 Monthly

Columns are detailed in the first lines of the CSV file

Sunspot number V2.3 Yearly

Columns are detailed in the first lines of the CSV file