In Downlord's client, the average rating column is labeled as "Ø Rating". I had no idea whether that meant max, min, or avg, and after a good few minutes of googling I stumbled on the following in a Wikipedia article on the symbol:
"In German-speaking countries, Ø is also used as a symbol for average value"
I can easily see how such a mistake was made, and it's not really a big deal, but in non-German localizations that symbol should be replaced by "avg" or equivalent.