"wind_string" (appears to) always return speeds in MPH eg: "From the NNW at 22.0 MPH Gusting to 28.0 MPH". Is there some way to force the return of KPH in this string or is there a KPH version? If not, is it a conflict of the Terms of Service (ToS) to programmatically alter the string to contain the KPH equivalent values: ToS says: "(1) you will not modify the data from Wunderground Data Feed in any way;" I would have thought that altering the units is not altering the actual data, which in theory could be expressed in many ways eg in Kelvin.