;"Factor 1";"Factor 2";"Factor 3" "Pb flux winter";0.75*;0.00;0.66 "Pb flux summer";0.93;0.32;0.19 "Average Pb content in soils";0.78;0.60;0.11 "Explained Variance";6.88;4.87;2.19 "Proportion of Total Variance";0.49;0.35;0.16