@tz Got it thanks! I will check that out. I figured it had something to do with surface area averaging, etc.

A great application. I have a technical question. I am monitoring the surface currents in a particular area off Key West in preparation for a future operation. When I am well zoomed in, I get one current value (e.g., 0.4 knots), but if I zoom farther out, the reading increases dramatically.

Can someone explain why this happens?

Thanks,

Curt