Table 7: Basis functions and important explanatory variables for the MARS model with .

FunctionStd. dev.Cost of omissionNumber of BFVariableRelative importance (%)

10.7890.3632 100.000
20.7610.3562 98.013
30.5700.3042 79.033
40.5310.2892 72.994
50.4120.2251 35.419
60.4020.2251 34.692
70.3490.2211 30.760
80.3150.2181 27.641
90.3170.2181 27.426
100.3060.2171 26.965