Added 2008 Production per Inning for all 12 teams. Unfortunately, I only have information from this season at the moment. Whether or not I'll be able to get stats together from prior seasons, I'm not positive at the moment.
In any case, enjoy.
BTW: The Giants had one of the best 1st inning teams in the NPB last season. This probably has something to with having Michihiro Ogasawara and Alex Ramirez batting 3 and 4 in the lineup.
The Seibu Lions, on the other hand, didn't fare quite as well in the first inning, but did well in the 4th and 5th innings. That would coincide nicely with the second plate appearances for Hiroyuki Nakajima and Takeya Nakamura (the Lions' 3 and 4).