Total ozone content over Tomsk in period of 1994-2017: results of statistical analysis

We presented the time series (1994-2017) of the total ozone (TO) content over Tomsk, obtained using M-124 ozonometer. These data were used to compose the average annual behavior. After the TO time series was processed to remove the annual oscillations, its variations were examined for a normality of the distribution. Annual and semiannual TO variations have been manifested in the Fourier spectrum. Application of simpler methods of statistical analysis allowed us to identify the quasibiennial oscillations.