TABLE 4.

Principal component analysis.

Component	Starting eigenvalue			Retrieve square and load
	Total	Variable %	Cumulative %	Total	Variable %	Cumulative %
1	5.980	59.804	59.804	5.980	59.804	59.804
2	1.650	16.497	76.301	1.650	16.497	76.301
3	1.092	10.916	87.217	1.092	10.916	87.217
4	0.792	7.916	95.133
5	0.327	3.267	98.400
6	0.130	1.296	99.696
7	0.023	0.232	99.928
8	0.006	0.056	99.984
9	0.001	0.013	99.997
10	0.000	0.003	100.000
11	5.980	59.804	59.804
12	1.650	16.497	76.301