title: Ozone Content over the Russian Federation in the First Quarter of 2019
abstract: The review is compiled of the results of the total ozone (TO) monitoring in the CIS and Baltic countries that functions in the operational mode at the Central Aerological Observatory (CAO). The monitoring system uses data from the national net work equipped with M-124 filter ozonometers op er at -ing under the methodological supervision of the Main Geophysical Observatory. The quality of the functioning of the entire system is operation ally con trolled in CAO by the comparison with the observat
journal: Russian Meteorology and Hydrology