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Table 4
Rotation parameters for 1878–1996 and 1874–2009 in units of deg/day.
| Northern hemisphere | ||||||
| First appearance of spots | All spots | |||||
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| time | Ω0 | B | Ω17 | Ω0 | B | Ω17 |
| 1878–1996 | 14.393 ± 0.008 | 3.309 ± 0.116 | 14.119 ± 0.003 | 14.414 ± 0.007 | 3.509 ± 0.119 | 14.114 ± 0.002 |
| 1874–2009 | 14.424 ± 0.005 | 3.680 ± 0.072 | 14.111 ± 0.001 | 14.411 ± 0.003 | 3.455 ± 0.050 | 14.115 ± 0.001 |
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| Southern hemisphere | ||||||
| First appearance of spots | All spots | |||||
|
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| time | Ω0 | B | Ω17 | Ω0 | B | Ω17 |
| 1878–1996 | 14.435 ± 0.008 | 4.931 ± 0.113 | 14.008 ± 0.002 | 14.413 ± 0.004 | 4.792 ± 0.067 | 14.003 ± 0.001 |
| 1874–2009 | 14.420 ± 0.005 | 4.855 ± 0.073 | 14.006 ± 0.001 | 14.401 ± 0.004 | 4.652 ± 0.083 | 14.006 ± 0.001 |
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