Tab. 3 Parameters of benzo[a]pyrene map

Linear regression model + interpolation of residuals annual average
rural areas urban background
c (constant) -0.83 -2.83
a1 (EMEP) 1.14 3.48
a2 (background map of PM10) 0.044  
a3 (urban map of PM10)   0.038
a4 ( model SYMOS – only REZZO 3)   8.07
range [km] 100 15
nugget 0 0
partial sill 0.00 0.35
RMSE [ng.m-3] > 0.5 0.6
relat. RMSE [%] > 60 33

 

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