Mousing over the circles (progress bars) reveals what a user's stat distribution is across the entire Ethos population is. In this example, this has 80% positive reviews, but is in the bottom 33% of the population of all users. That's to say, 66% of all users have a higher positivity review score (80% here) than this user.
Reviews: Percentage of positive reviews
Note: a user with 100 positive reviews and 0 negative reviews will have the same population distribution as a single user with 1 positive review.
Vouched: Ethereum vouched against this user
ie. significant amounts of eth vouched will be higher, low or no eth will lower
Vouched in Others: Ethereum this user has vouched in others
ie. significant amounts of eth vouched in others will be higher, low or no eth will be lower
Invited: The number of people a user has invited