We determine the Visibility Index for 40 countries. In each country, the same number of visibility points is distributed among all ranking domains. A visibility index of 10 in Germany therefore also corresponds to a visibility of 10 in the USA.
Since the size of the respective markets naturally differs greatly, depending on the number of inhabitants and the search query in the respective country, you get a different number of visitors with the same Visibility Index.
You can compare the Visibility Index across all countries in SISTRIX but be aware that a similar Visibility Index in USA and UK, for example, only tells you that the domain is equally visible in both countries. It does not relate to the same number of potential numbers of organic visitors.