condition mean min max 4 h after light 61.4601 60.3816 62.5386 8 h after light 54.793499999999995 52.928 56.659 12 h after light 59.56745 56.7892 62.3457 4 h after dark 147.711 145.916 149.506 8 h after dark 124.37700000000001 121.081 127.673 12 h after dark 99.60095 96.4379 102.764