condition mean min max 0 h after light 82.20545 77.977 86.4339 4 h after light 204.491 159.11 249.872 8 h after light 99.1056 85.2772 112.934 4 h after dark 26.259 23.8419 28.6761 8 h after dark 34.25375 32.0821 36.4254 12 h after dark 91.8631 79.3232 104.403