However location factor for a particular region within a country can be easily determined by adding 10 % to the index of the reference location for every 1000 miles .
Over the past couple of decades the location factors for various locations are trending close to the value 1 .
Location factor for a particular region within a country can be easily determined by adding 10 % to the index of the reference location for every 1000 miles .
Over the past couple of decades the location factors for various locations are trending close to the value 1 .