Tab. 7 Parameters of arsenic and cadmium maps

Linear regression model + interpolation of residuals As
annual average		 Cd
annual average
rural areas cities whole map
c (constant) -0.69    
a1 (rural map of PM10) 0.103    
range [km] 90 45 14
nugget 0 0.5 0
partial sill 0.2 1.5 1.8
weight IDW   1  
RMSE [ng.m-3] 0.5 1.0 0.4
relat. RMSE [%] 41 49 81

 

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