The best first step is to try the download several times at different hours of the day over several days. This text is in a sans serif font. The actual font displayed will vary depending on the fonts you have installed on your system. If your system has one of these standard fonts it will use the first font it finds available, to display this text. If your monitor is in reasonable adjustment you should be able to place a plastic ruler against your screen and measure the line.
Horizontal size is usually a user adjustment.
Some variation may occur if you are using a multi-sync monitor. This type of monitor allows a user to select higher dpi settings. If your monitor is in reasonable adjustment you should be able to place a plastic ruler against your screen and measure the height of the line. Vertical size is usually a user adjustment. Between the 4th and 5th inch marks on the left side of the scale are 32 horizontal lines, if you have a reasonable quality display in reasonable adjustment you should see 32 lines.