Approximate Formulas Fitted to the Davis-Sartor-Schafrir-Neiburger Droplet Collision Efficiency Calculations

Abstract
Two approximate interpolating formulas suitable for rapid computation are given that fit a combined version of the Shafrir-Neiburger and Davis-Sartor collision efficiencies for unchanged spherical cloud droplets. The method of fitting is indicated for use in approximating future improvements in the theory.