Jerlov Type IB has the values

absorption      0.656268 0.0626235 0.0315236
scattering      0.026415 0.0305028 0.0332241
extinction      0.682683 0.0931263 0.0647477
diffuseK        0.58     0.0612    0.03324
reflectivity    0.0003   0.0152    0.04048
The physical units of the numbers in the first four lines are [1/meter]. The numbers for reflectivity are dimensionless fractions. This choice is suitable for the clear equitorial ocean waters in the world, but not as clear as type IA or I.