Not Displaying Proper Headwind Readings

[Mamil]

On this morning's ride (attached), Newton didn't seem to be reading the headwind properly. When there was an obvious strong headwind, Newton read around a 2 mph tailwind. The tailwind readings seemed to make sense. For the most part, there didn't seem to be much of a crosswind. I stopped several times and did the Wind Cal. Just to try to make sense of things, when Newton was reading a 8-10 mph tailwind, I turned around for a couple of hundred yards, and Newton read a 1-2 mph tailwind when I expected to see an 8-10 mph headwind. The route was a straight dead flat wide opened road. There was absolutely no traffic with no other riders or drafting opportunities . (The climbing was a separate part of the ride.)

I've also attached the CAL file I use. Here's the Garmin link to show route information - http://connect.garmin.com/activity/199554677.

Look forward to any insights the community might have.

Thanks!

[Zoltan]

Did you get any feedback? I have the same sort of problem with a Gen3 iAero.

http://ibikeforum.com/viewtopic.php?f=6&t=2584