1st inning: 8-10
 2nd inning: 8-10 
 3rd inning: 5-13
 4th inning: 10-8
 5th inning: 11-7 
 6th inning: 13-5
 7th inning: 8-10
 8th inning: 6-12
 9th inning: 8-10
If you prefer to look at months:
Mar/Apr 12-18 
 May 10-16
 June 14-13
 July 19-6
 August 11-16
 September 11-16
It comes out the same: three winning innings out of nine, or two winning months out of six, that makes one-third of the season they played .