Speeds are max display speed shown on gps , verified by one other person.
Additionally best 2 second speeds were cribbed from the team challenge (hope you don't mind Hardie) when display speed was not known.
Note, some speeds were by heavyweights on the latest speed gear and others were by lightweights on wave gear. It's all relative. Hopefully you can see where your mates are at and have some private battles. :-)))