Built a map of where every clue comes from, and a scoreboard of every test
Gave all 209 clues and mysteries a place (where it was written or seen, where the ice or trees were sampled; 'in the sky' or 'worldwide' when there is no spot) and drew them on a world map, with a line for each hunch joining its two clues and a table of how far apart they are. Then listed all 46 tests and checks run so far on a Scoreboard page, marking which were decided before looking at the data. Of the 25 fair tests, 3 passed (chance by luck under 0.05), where luck alone gives about 1.2; 3 or more would happen by luck about 13 times in 100. Each of the 3 passes fell apart when checked a second way, so none counts as a finding yet.