MLB Over/Under Records In Non-League Games (2015, National League Central)

Over Record: The number of times the game went over, under, and pushed
Over %: The percentage of time the total went over, net of pushes
Under %: The percentage of time the total went under, net of pushes
Total +/-: The average amount of points that the game goes over (negative in unders)

What is every National League Central team's record against the over/under line in non-league games in the 2015 season?

Team	Over Record	Over %	Under %	Total +/-
Milwaukee	11-8-1	57.9%	42.1%	+1.5
Cincinnati	10-10-0	50.0%	50.0%	+1.1
Pittsburgh	10-10-0	50.0%	50.0%	+0.3
Chi Cubs	8-10-2	44.4%	55.6%	+0.7
St. Louis	4-14-2	22.2%	77.8%	-1.3