Please kindly refresh the link in #16 for Correction to get the latest plot.

I had to cut all the way to 2012, so the dimensions of the data i.e. the number of rows match for Correlation:

Darwin
{2012, 6., 7.2, 6.3, 10.7, 11.3, 13.3, 12.8, 14., 12.2, 10.8, 9.3, 7.7}


Tahiti
{2012, 12.4, 12.3, 10.8, 12.2, 12.6, 13.2, 13.5, 14.9, 15., 14.1, 12.8, 10.}

The correlation between the raw data then is 0.583649