condition mean min max 4 h after light 5.301355 4.87 5.73271 8 h after light 3.330565 2.92346 3.73767 12 h after light 2.263455 1.93772 2.58919 4 h after dark 2.25708 1.97814 2.69299 8 h after dark 4.935686666666666 3.0766 7.18794 12 h after dark 3.67507 1.18565 6.57346