I suggest you, as the first step, to start with a definition of an efficiency relation. Examples: efficiency=(total emitted energy)/(supply energy) efficiency=(emitted energy in a range of frequencies)/(supply energy) efficiency=(emitted energy in a range of frequencies and over a solid angle)/(supply energy)
Springdale, AR Lowest Regular Gas Prices Summary. There are 28 Regular gas price reports in the past 5 days in Springdale, AR. The average Regular gas price in Springdale, AR is $2.12, which is $0.29 lower than U.S. national average Regular gas price $2.41. The lowest Regular gas price is $2.05 of Murphy Express located at 7250 W Sunset Ave, Springdale, AR 72762.
2 days ago $ 1 99update there are 307 regular gas price reports in the past 5 days in phoenix az the average regular gas price in phoenix az is $ 2 20 which is $ 0 59 lower than u s national average regular gas price $ 2 79the lowest regular gas price is $ 1 94 of costco membership required located at 19001 n 27th ave phoenix az 85027the highest regular gas price is $ 2 78 of shell located at 5835 n 27th ave phoenix az 85017he highest regular gas price is $ 2 78 of shell located at 5835 n 27th ave phoenix az 85017