This line chart displays the smoothed number of new COVID-19 cases in Russia from January to August 2020, with individual data points highlighted as circles and a red line connecting them. The visualization uses D3 v5 with `scaleTime` and `scaleLinear` for axes, `line` for the path, and `d3-tip` to show tooltips with case counts and full dates on hover. Data comes from a CSV file with dates and smoothed case values, rendered as an SVG.