condition mean min max 0 h after light 120.91 119.894 121.926 4 h after light 78.19545 77.3254 79.0655 8 h after light 57.7575 57.0454 58.4696 4 h after dark 68.01545 64.4678 71.5631 8 h after dark 100.27185 98.1737 102.37 12 h after dark 115.424 112.157 118.691