condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 2.373855 0.0 4.74771 12 h after light 5.036175 4.32949 5.74286 4 h after dark 1.89209 0.0 3.78418 8 h after dark 1.87966 0.0 3.75932 12 h after dark 1.571875 0.0 3.14375