Table 1

Eigenvalues of the principal component (PC) analysis for the four data sets, given as percent of the total variance (rounded off to the nearest whole percentage point). Note that the first component captures the lion's share of the variance, and that the second component is also quite sizable.

Data set
Egv 1
Egv 2
Egv 3
Egv4
Egv5
Egv6
Egv7
Egv8
Egv9

Furs
61%
13%
9%
6%
5%
4%
1%
1%
--
Furs + NAO
55%
12%
10%
7%
5%
5%
3%
2%
1%
Furs + ENSO
54%
14%
9%
7%
5%
5%
3%
2%
1%
Furs + temp
56%
12%
11%
7%
5%
4%
3%
2%
1%

Loeuille and Ghil BMC Ecology 2004 4:6   doi:10.1186/1472-6785-4-6