nprec = 6    # six precursor groups
VECTOR c[nprec]
VECTOR lambda[nprec]
VECTOR beta[nprec]

beta[1] = 0.000215
beta[2] = 0.001424
beta[3] = 0.001274
beta[4] = 0.002568
beta[5] = 0.000748
beta[6] = 0.000273
Beta = vecsum(beta)

lambda[1] = 0.0124
lambda[2] = 0.0305
lambda[3] = 0.111
lambda[4] = 0.301
lambda[5] = 1.14
lambda[6] = 3.01

Lambda = 40e-6