What is a "Good" BB won per hand from the Big Blind

[BrassMonkey]

I was just looking through my 3/6 six max stats, and think that my BB won per hand from the Big Blind might be kind of lousy. Does -.23 suck, or what? My sample size is small (14,000 hands), but it could be that I defend too liberally from the big blind (folded 45.65%). Am I probably right in my assessment?

Thanks,

Brass