I have added a Table (TS1) to the Supplementary material after a comment made by the copy-editor. The comment asked if the latitude/longitude locations of the independent sites should be in Table 2, so instead I added the table to the supplementary material. The table contains the locations (latitude and longitude) of the 6 independent observations sites used in the independent analysis. This has been added so the exact locations can be known to the reader, the locations are already displayed on the map in Fig. 2 and the information about the range of years used in the independent analysis are all in the main text already (Paragraph 3 of Sec 2.1.). See attached supplement, page 1.