As far as I know those numbers are 1 Hz steps above standard pitches. So if you have E2 on a electronic tuner you are 2 Hz above a true E note. Hopefully that's what you were looking for.
Jimmie showed me alot of stuff, but there was a time when he warned, 'If you ask me to show you anything again, I'll kick your ass.' Well, I did and he did. - SRV