condition mean min max 4 h after light 38.64285 35.3374 41.9483 8 h after light 47.1973 45.7037 48.6909 12 h after light 110.6495 108.26 113.039 4 h after dark 144.8125 143.764 145.861 8 h after dark 106.286 104.154 108.418 12 h after dark 76.6148 74.3729 78.8567