Table 5: Model terms in RSM for lead.

TermStandard errorVIFRi2Power (%)

A0.353610.000068.1
B0.353610.000068.1
C0.353610.000068.1
AB0.500010.000040.8
AC0.500010.000040.8
BC0.500010.000040.8
A20.48731.005880.005893.8
B20.48731.005880.005893.8
C20.48731.005880.005893.8