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The Minnesota Vikings signed a $1.3 million contract with Ephesus to upgrade the lighting. According to Ephesus, they use a computer-generated model and simulator to coordinate alignment of the lighting to ensure that it is balanced to help player performance and improve the fan experience through improved visibility and the prevention of glare. Controls for the LED system would allow for adjustments based on the amount of sunlight entering the stadium, and would allow the changing of the light’s color temperature for different events. Football games are usually best enjoyed under lighting with a medium color temperature, basketball games under a warmer color temperature (yellowish white to red), and hockey games a cooler (bluish white). Ephesus, which is based in Syracuse, New York, makes the system in America.