Further, from 1745, the two parallel cycles are roughly
Jupiter-Saturn: 1745 1755 1765 1775 1785 1795 1805 1815 1825 1835 1845 1855 1865 1875 1885 1895 1905 1915 1925
Sunspots: 1745 1756 1766 1777 1787 1797 1809 1819 1830 1840 1851 1861 1872 1883 1893 1904 1914 1925 1936
The Jupiter-Saturn cycle causes most of the barycentric radius variance, which in turn closely aligns to sunspot dates. Over the 180 year period from 1745, from the chart it appears that there were 16 sunspot cycles, and of these, at least 11 were in the time quartiles when the barycenter was at a local maximum or minimum. The very rough statistics of this is that sample = 16, expected result is 8, probability of result 11 is <7%. With an astronomic cycle of such a clear pattern this is a significant result. And when sample size is doubled to cover two cycles, ie from 1630 to 1990, probability is ~1.5%. Refining this rough approximation against data would strengthen the finding.