Table 3. PCA loadings.
The first four principal component (PC) axes contribute to 90.2% of the total variation of the ten log normal variables. For each PC, the proportion of total variance (%) and the loadings on these are given. The variables with the highest loading are shown in bold and are discussed within the text.
| PC1 | PC2 | PC3 | PC4 | |
|---|---|---|---|---|
| Proportion of variance | 43.5 | 24.4 | 13.2 | 9.1 |
| BLD | 0.85046873 | 0.02545804 | 0.016857617 | 0.272291215 |
| BOL | 0.159862063 | 0.161106564 | 0.012761305 | −0.070830236 |
| DIL | −0.246528468 | −0.026035317 | −0.415136231 | 0.156169866 |
| IOW | −0.249260494 | 0.331660879 | 0.681589555 | 0.259415969 |
| NL | −0.175108112 | 0.062932441 | −0.505939657 | 0.130829626 |
| NW | −0.296951523 | 0.01926985 | 0.131337875 | 0.224903873 |
| PAL | 0.027064391 | 0.140782388 | 0.078947604 | −0.866213361 |
| SCF | −0.050436754 | −0.905402173 | 0.218089373 | −0.039704014 |
| SLD | −0.064043373 | 0.114113325 | −0.185926838 | 0.027064132 |
| SW | 0.044933539 | 0.076114004 | −0.032580602 | −0.093927069 |