Estimation of physical effectiveness of cloud seeding on the hailstorm processes

In the article the results of definition of physical effectiveness anti-hailstones operations, calculated on the foundation of regressive of coupling equations of performances of the hailstones with parameters of an atmosphere in hailstorm days and according to frequency of shedding of hailstones in defended and control territories are demonstrated. The errors of the regression equations which are appreciated by a method of cross-checkout are cited.