Analysis of the drivers of ASF introduction into the officially approved pig compartments in South Africa and implications for the revision of biosecurity standards

Table 4 Eigen values of first 2 components

Principal components (PCs)	Eigenvalue	Percentage of variance	Cumulative percentage of variance
comp 1	27.65	81.32	81.32
comp 2	1.33	3.91	85.23

ISSN: 2055-5660