Climate Regionalization of Asphalt Pavement Based on the K-Means Clustering Algorithm

Table 2

Principal component load matrix.

Climate factors	Climate variance	Principal components
		1	2	3
Temperature factor		0.418	−0.767	0.412
		0.651	0.670	0.240
		0.361	−0.750	0.446
		0.641	0.702	0.271
		0.693	0.598	0.250
Precipitation factor		−0.860	0.297	0.074
		−0.810	0.394	0.092
Radiation factor		0.864	−0.078	−0.357
		0.642	−0.106	−0.608