Open Access
Table A.1.
Summary of S-index values used in this work.
| Star | Survey | Obs beg | Obs end | Span [days] | Nobs | Ref |
|---|---|---|---|---|---|---|
| Sun | MWO | 1966-09-01 | 2002-11-23 | 13231 | 237 | Egeland et al. (2017) |
| NSO | 1976-11-20 | 2015-09-30 | 14193 | 4112 | Egeland et al. (2017) | |
| SSS | 1994-03-02 | 2016-02-26 | 8030 | 2000 | Egeland et al. (2017) | |
| 61 Cygni A | MWO | 1967-06-26 | 1994-11-14 | 10003 | 1122 | Baliunas et al. (1995) |
| NARVAL | 2006-08-04 | 2018-07-22 | 4370 | 121 | Boro Saikia et al. (2016) | |
| ϵ Eridani | MWO | 1967-18-10 | 2012-08-24 | 16350 | 41 | Metcalfe et al. (2013) |
| SMARTS | 2007-08-22 | 2012-10-13 | 1880 | 141 | Metcalfe et al. (2013) | |
| TIGRE | 2013-08-14 | 2019-03-02 | 2027 | 95 | Coffaro et al. (2020) | |
| NARVAL | 2007-01-21 | 2018-11-16 | 4318 | 195 | this work |
Notes. MWO refers to observations secured at the Mount Wilson Observatory, NSO at the National Solar Observatory, SSS the Solar-Stellar Spectrograph. The publications that contain the S-index values are shown in the column Ref.
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