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.
Las Vegas, NV Lowest Regular Gas Prices Summary. There are 344 Regular gas price reports in the past 5 days in Las Vegas, NV. The average Regular gas price in Las Vegas, NV is $2.31, which is $0.25 higher than U.S. national average Regular gas price $2.06. The lowest Regular gas price is $2.09 of Costco (Members Only) located at 801 S Pavilion Center Dr, Las Vegas, NV 89144. The highest Regular gas price is $2.7 of Rhino Mart located at 780 E Pyle Ave, Las Vegas, NV 89183.