Mapping Urban Heat Vulnerability of Extreme Heat in Hangzhou via Comparing Two Approaches

Table 4

Total variance explained in the PCA method.

Component	Initial eigenvalues			Extraction sums of squared loadings
	Total	% of variance	Cumulative %	Total	% of variance	Cumulative %
1	3.78	42.005	42.005	3.78	42.005	42.005
2	1.97	21.886	63.891	1.97	21.886	63.891
3	1.61	17.893	81.784	1.61	17.893	81.784
4	0.887	9.850	91.635
5	0.339	3.767	95.402
6	0.159	1.762	97.164
7	0.138	1.536	98.700
8	0.103	1.142	99.842
9	0.014	0.158	100.00