What Team Had the Lowest Power-Speed # since 1920?

I thought about this because the Tigers came into today with only 20 HRs, last in the AL by 5 while also being last in SBs with just 6, by 4.

Here is what Baseball Reference says about Power-Speed #

"2 x (Home Runs x Stolen Bases)/(Stolen Bases + Home Runs) The harmonic mean of HR and SB. To do well you need a lot of both. Developed by Bill James." 

Using Stathead, I called up all the teams who had both 50 or less HRs & SBs then all the teams with 20 or fewer HRs then all the teams with 20 or fewer SBs. It will probably be one of those teams. I just have not done the math yet. I only looked teams with 100+ games in a season (team Power-Speed # is not directly searchable in Stathead). 

The 1931 Reds have a PS# of 22.4, the lowest of any team from 1920 on (1957 Senators have 23.27). Found only 8 teams post 1920 under 30.

There are lots of teams lower than 22.4 but they all played before 1920 and even then it looks mostly before 1910. The 1908 White Sox are 5.91 with 3 HRs and 209 SBs

The Reds were still playing at Redland Field where it was very tough to hit a HR.

Here are the 10 lowest that I found

Tm	Year	Lg	HR	SB	PS#	G
CIN	1931	NL	21	24	22.40	154
WSH	1957	AL	111	13	23.27	154
BSN	1926	NL	16	81	26.72	153
KCA	1960	AL	110	16	27.94	155
BOS	1921	AL	17	83	28.22	154
PHA	1945	AL	33	25	28.45	153
STL	1949	NL	102	17	29.14	157
PIT	1920	NL	16	181	29.40	155
CLE	1945	AL	65	19	29.40	147
SLB	1953	AL	112	17	29.52	154