condition mean min max 0 h after light 186.886 184.361 189.411 4 h after light 74.23005 72.3596 76.1005 8 h after light 32.0712 29.4866 34.6558 4 h after dark 52.2419 43.3865 61.0973 8 h after dark 80.47095 75.1817 85.7602 12 h after dark 155.1625 117.153 193.172