condition mean min max 0 h after light 3.408785 3.0702 3.74737 4 h after light 2.043505 1.97766 2.10935 8 h after light 1.505525 1.46637 1.54468 4 h after dark 3.8814349999999997 3.25794 4.50493 8 h after dark 4.029075 3.73084 4.32731 12 h after dark 3.3671800000000003 3.3228 3.41156