Table 1.

Tree sampling sites, the latitude and longitude (degrees and minutes) of their location, start and end date of the period spanned by the measured ring widths contributing to the chronologies, the total number of samples, the mean between-sample correlation (RBar) at inter-annual (high frequency) and multi-decadal (low frequency) time scales, tree species (PISY is Pinus sylvestris, LASI is Larix sibirica and LAGM is Larix gmelinii), and a reference to the source of data. Italics indicate regional average chronologies.

site name	north	east	start	end	samples	RBar		species	references
						high	low
Torneträsk	68° 14	19° 40	−38	1997	587	0.37	0.25	PISY	Grudd et al. (2002)
Finnish–Lapland	69° 50	28° 00	−289	1999	430	0.38	0.27	PISY	Helama et al. (2002)
Fennoscandia			−289	1999	1017	0.33	0.22	PISY
Yamal	67° 30	70° 00	−200	1996	611	0.54	0.24	LASI	Hantemirov & Shiyatov (2002)
Yamal			−200	1996	611	0.54	0.24	LASI
Bol'shoi Avam	70° 30	93° 01	851	2003	178	0.50	0.24	LAGM	Sidorova et al. (2007)
Taimyr	72° 00	101° 00	−207	2000	152	0.52	0.23	LAGM	Naurzbaev et al. (2002)
Avam–Taimyr			−207	2003	330	0.46	0.21	LAGM
Northwest Eurasia			−289	2003	1599	0.18	0.15