Table 4: Estimated coefficients and standard errors of the parametric part of the additive predictors for PM10 (bold indicates 5% significance).

Est.Std. Er.

(Intercept)3.050.100
Daily traffic0.00008 0.00001
Monday−0.010.059
Tuesday0.090.062
Wednesday0.110.060
Thursday0.080.060
Friday0.050.066
Saturday0.060.053