Table 3.

Results of principle component analysis.

	Eigenvalue	Proportion	Cumulative proportion
Component 1	2.47729627	0.3539	0.3539
Component 2	1.23676622	0.1767	0.5306
Component 3	0.96223779	0.1375	0.6680
Component 4	0.80457156	0.1149	0.7830
Component 5	0.61566509	0.0880	0.8709
Component 6	0.56651689	0.0809	0.9519
Component 7	0.33694618	0.0481	1.0000