condition mean min max 4 h after light 1469.47 1396.64 1542.3 8 h after light 2912.6400000000003 2836.48 2988.8 12 h after light 3288.625 2928.44 3648.81 4 h after dark 315.9675 253.087 378.848 8 h after dark 153.656 151.93 155.382 12 h after dark 131.6885 127.348 136.029