Source Identification and Spatial Distribution of Heavy Metal Concentrations in Shallot Fields in Brebes Regency, Central Java, Indonesia

Table 3

PCA results of heavy metal concentrations in the soil of shallot fields in Brebes Regency, Central Java, Indonesia.

Principal components	Eigenvalues	Proportions of the total variance	Cumulative proportions
		%
1	2.2485	45.00	45.00
2	1.1074	22.10	67.10
3	0.9404	18.80	85.90
4	0.3751	7.50	93.40
5	0.3286	6.60	100.00