Florida Artificial Light Levels, 1992-2012 (IMAGE) University of Central Florida Caption Image A shows average nighttime light levels in Florida from 1992-2012. Image B shows decreasing light levels over time, denoted by a lower slope value, in many nesting areas. Credit University of Central Florida Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.