The SPRAY model that has been used to compute the 'measurement' is now modified a little: The resonance frequency of the Kim oscillator is changed from 14000 to 10000 1/cm, the oscillator strength from 3000 to 1000 1/cm. The absorption and scattering coefficients are now the following:

The diffuse reflectance spectrum is changed too, of course. The spectrum is now calculated with 100 rays per spectral point only in order to speed up the computations in the following parameter fit:

This configuration is saved in the file optimize_start.s99 which is distributed with the help file.