condition mean min max 4 h after light 14.72565 13.5946 15.8567 8 h after light 11.7705 11.1525 12.3885 12 h after light 10.17024 9.79658 10.5439 4 h after dark 13.887333333333332 13.2798 14.4148 8 h after dark 15.742099999999999 14.9308 16.4885 12 h after dark 16.449133333333332 15.6337 16.9213