condition mean min max 4 h after light 0.119744 0.0 0.239488 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.105061 0.0 0.210122 8 h after dark 0.26326 0.103798 0.422722 12 h after dark 0.086037 0.0 0.172074