Sentence:  The results of the study , based on collision integrals computed from the latest critically evaluated data on intermolecular forces in air , will be reported in the form of a table of viscosity , thermal conductivity , thermal <WSD>diffusion</WSD> , and diffusion coefficients at temperatures of 1000 to 10000 * * f and of logarithm of pressure in atmospheres from * * f to * * f times normal density . 
Meaning of the word marked with <WSD> tags:  (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration