condition mean min max 4 h after light 1.964655 1.48066 2.44865 8 h after light 0.378456 0.357035 0.399877 12 h after light 0.5132675 0.162792 0.863743 4 h after dark 2.14872 2.02083 2.27661 8 h after dark 2.165995 1.97894 2.35305 12 h after dark 1.7436699999999998 1.12319 2.36415