The article analyzes the annual observation data of the Federal Service for Hydrometeorology and Environmental Monitoring (RosHydroMet) from 2010-2019. RosHydroMet constantly monitors and selects reliable information from various systems: national network stations, as well as foreign terrain and satellite stations, by which data of total ozone content have a high degree of reliability, accuracy and detail. Quantitative indicators of total ozone content over the territory of the Russian Federation are considered, the values of which are expressed by the reduced thickness of the ozone layer. Deviations of the average annual total ozone content from the norm for this period in percentage are also presented in graphic form and corresponding conclusions are made based on the analysis results.

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