[gvb]

That is a typo, it should be 9m/s^2 http://en.wikipedia.org/wiki/Earth%27s_gravity#Altitude (gravity at the earth's surface is 9.8m/s^2, the link states it is 90% of that at the ISS).

[sageikosa]

Yes, that one: (9m/s)/s. Less a typo on my part and more of a "brain-o".