The results of determining total ozone content (TOC) in the vertical atmospheric column obtained using measurements by the MSU-GS multi-zone scanning device for hydrometeorological support on board the Arktika-M Russian spacecraft are compared with independent data. The comparison includes data from both ground-based measurements by the Dobson and Brewer instruments presented on the website of the World Ozone and Ultraviolet Data Centre (WOUDC), Canada, and satellite measurements by the TROPOMI (TROPOspheric Monitoring Instrument) instrument onboard the Sentinel-5P (Sentinel-5 Precursor) spacecraft. The study covers the period from March 2023 to October 2024 and the region north of 50° N. The MSU-GS data are preliminarily averaged over 1-hour intervals. Comparison with the results of individual ground-based measurements shows that the mean differences (MD) of the two types of measurements do not exceed 8 % in absolute value, and the standard deviations of the differences (SDD) are no more than 6.7 %. It should be noted that for three polar (beyond the Arctic Circle) observing stations, the MD do not exceed 1.1 %, and the SDD are less than 6.3 %. Daily averaged MSU-GS measurements are compared with daily averaged data from ground-based stations. For this comparison, the absolute MD are no more than 8.2 %, and the SDD do not exceed 7.7 %. Comparisons with single TROPOMI measurements show MD of 0.2 % with SDD of 6 %. No significant seasonal or latitudinal variations are detected. Examples of TOC distributions in the circumpolar region obtained using MSU-GS are presented in comparison with TROPOMI data, demonstrating satisfactory qualitative agreement between the two instruments.