Table 5: Basis functions and important explanatory variables for the MARS model with .

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

10.5960.8712 100.000
20.5820.8642 98.281
30.3800.7642 68.774
40.3690.7631 68.220
50.2450.7021 40.739
60.2340.7001 39.271
70.2030.6922 33.836
80.1950.6911 32.728
90.1880.6881 30.632
100.1860.6881 30.530