As The Englishman I was interested in what the hacked files said about England ...\FOIA\documents\briffa-treering-external\belfast\masters\england.dat is described as: DMB 19 SITE MEAN MASTER 404AD TO 1981AD Modern European Ring Width Masters as supplied by Dave Brown, March 95 Graphed out the figures look like this: (If the right hand side of the graph is cut off click here Do they relate to temperature? I don't know but let's compare them to the Central England Temperature record from 1660 to 1981 (It's a pity that is the last date of the tree rings..) Squinting at them, which is the poor man's multivariate analysis, they sort of do. Now look back at the longer graph. Looks a bit "warmer" maybe back in the middle ages. Of course I don't know anything more about the tree rings than the description above so I may be barking up the wrong tree. But I thought it interesting and it didn't cost the taxpayer anything to produce the graph, and only took me ten minutes...