Each of the blue numbers underneath each category are the total number of systems you have saved that favor that position
(or go against the opposite position). Click on those numbers to view a list of all of those systems in detail.
Each of the numbers under the AVG Power columns equal the average power rating for all of the corresponding active systems that you have designated a power rating for
(scale of 1-10 rounded to one decimal place). If you don't have a power rating designated for an active system it does not factor into the calculation.