People,
Be wary of ANY "standard" sg figures - unless you are talking comparatively trivial quantities then you must get the actuals from the fuel farm or run a reading yourself.
The real numbers can vary quite a bit. For the GA piston guys and gals this is not too important due to small quantities but do be aware that one can see variations (Australia for example) such a 100/130 down near 0.69 through to 100LL near 0.72.