_RL lnTEN
lnTEN = log(10.0 _d 0)
cc0 = exp(aa2*lnTEN)
cc1 = cc0*aa1*bb1*Ppascals*lnTEN
mm_pi = exp(mm_log10pi*lnTEN)
cc3t = exp(aa1 / t1 * lnTEN)