Dear Nikolay! > You should check Your profile by the other set of points, than the > profile built. Thank you for your suggestion. I do fully agree with the approach you proposed! Unfortunately I do not know how I should deal with that... Do you know of any way of generating the testing points that would be different from 2000 points I used when generating the profile? I have the .ti1 and .ti3 files used to generate the profile.