A mixed polynomial method is adopted to expand the fields of the total amount of ozone at 40°—85°N from July 1957 through June 1967. Analyses of the coefficients in the expansions reveal the characteristic features of the distribution in space of the secular monthly means of the ozone field and the variation of these features with seasons. By the smae method the information processing has been accomplished for the height field at 10, 30, 50, 100, 300 and 500 mb at 20-65°N in the corresponding period of time. On this basis studies are made by syno-p tic-statistical method of the distribution of the total amount of ozone and its seasonal variation as well as its correlation with that of the stratospheric-tropospheric circulation.