Admob Mediation Automatic eCPM

Does anyone know if the automatic eCPM values for ad networks consider the Geolocation of the request when using Admob medation?

Eg.
If I have added AdColony to my waterfall and my average eCPM value from the US is $6 and the average eCPM across all countries is $4. If a request for an ad from the US is made will Admob mediation use the $6 eCPM value for AdColony when considering what ad network to display an ad from?