condition mean min max 0 h after light 18.24 17.0495 19.4305 2 h after light 8.524989999999999 7.53829 9.51169 4 h after light 6.142545 6.09531 6.18978 8 h after light 9.352545 7.22779 11.4773 12 h after light 16.01035 14.4811 17.5396 2 h after dark 10.015395 9.95429 10.0765 4 h after dark 11.65505 10.9751 12.335 8 h after dark 18.036949999999997 17.6378 18.4361 12 h after dark 19.4328 18.9858 19.8798