condition mean min max 0 h after light 11.862400000000001 11.7136 12.0112 4 h after light 6.752685 6.58691 6.91846 8 h after light 8.937225 7.76165 10.1128 4 h after dark 11.68965 11.4952 11.8841 8 h after dark 8.65949 8.23134 9.08764 12 h after dark 9.48508 8.55266 10.4175