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Table 3.
Acronyms used in this work to refer to various sunspot datasets, listed separately for the sunspot area, ISN, and GSN series.
| Data series | Acronym | Period |
|---|---|---|
| Sunspot areas | ||
| Royal Greenwich Observatory | RGO | 1874–1976 |
| Mandal et al. (2020a) (a) | MEA20 | 1874–2019 |
| ISN | ||
| Clette et al. (2007) (b) | ISNv1 | 1700–2014 |
| Clette & Lefèvre (2016) (b) | ISNv2 | 1700–2019 |
| GSN | ||
| Svalgaard & Schatten (2016) (b) | SvSc16 | 1610–2015 |
| Chatzistergos et al. (2017) (a) | CEA17 | 1739–2010 |
Notes.
(a)
The series is available at http://www2.mps.mpg.de/projects/sun-climate/data.html
(b)
Available at https://www.sidc.be/silso/datafiles
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