Table 3: Factor coordinates of the variables, based on correlation, of the first three factors obtained by PCA analysis of fluxes collected in D4, D5, and D6 from September 2006 to March 2009.

VariableFactor 1Factor 2Factor 3

V0.951*0.0210.009
Cr0.528−0.685*0.249
Co0.416−0.799*0.290
Ni0.847*−0.3570.112
As0.741*0.341−0.157
Mo0.619*0.028−0.218
Cd0.694*0.584−0.166
Sb0.547*0.400−0.140
Pb0.583*0.2140.066
ΣPAH0.1100.4440.840*
ΣPAH R.C.−0.0230.2860.915*
Prec.0.584*−0.146−0.039

indicates which variable is important for the factor 1, 2 or 3.