Open Access
Table A.1.
Cycle-averaged values for the various sunspot series.
| SC | Sunspot series | |||
|---|---|---|---|---|
| ⟨sa⟩ | ⟨sn⟩ | ⟨sgn⟩ | ||
| MEA20 | ISNv1 | ISNv2 | CEA17 | |
| 1 | - | - | - | 3.04 |
| 2 | - | - | - | 5.23 |
| 3 | - | - | - | 3.32 |
| 4 | - | - | - | 3.42 |
| 5 | - | - | - | 2.62 |
| 6 | - | 1.06 | 1.06 | 2.50 |
| 7 | - | 3.24 | 3.23 | 3.84 |
| 8 | - | 4.78 | 4.78 | 4.79 |
| 9 | - | 4.43 | 4.80 | 4.71 |
| 10 | - | 4.04 | 4.61 | 4.72 |
| 11 | 0.28 | 4.43 | 4.44 | 4.34 |
| 12 | 0.69 | 2.84 | 2.84 | 3.29 |
| 13 | 0.88 | 3.25 | 3.25 | 3.84 |
| 14 | 0.70 | 2.69 | 2.69 | 3.12 |
| 15 | 0.89 | 3.67 | 3.67 | 4.09 |
| 16 | 0.95 | 3.41 | 3.41 | 3.95 |
| 17 | 1.24 | 4.80 | 4.81 | 5.38 |
| 18 | 1.60 | 6.22 | 5.45 | 6.06 |
| 19 | 1.98 | 7.60 | 6.47 | 6.85 |
| 20 | 1.11 | 5.10 | 4.34 | 5.16 |
| 21 | 1.73 | 6.63 | 5.56 | 6.24 |
| 22 | 1.66 | 6.58 | 5.32 | 6.04 |
| 23 | 1.32 | 4.57 | 4.12 | 5.01 |
| 24 | 0.88 | - | 2.57 | - |
Notes. The values for MEA20 are given in fractional areas multiplied with 1000. The ISNv1 and ISNv2 sunspot number values were divided by 12.08 (ISNv2 values are also multiplied by 0.6) to bring them roughly to the same level as the group sunspot number series.
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