condition mean min max 0 h after light 1.0995775 0.976435 1.22272 4 h after light 7.33908 7.33749 7.34067 8 h after light 10.460560000000001 9.69102 11.2301 4 h after dark 5.585694999999999 5.27441 5.89698 8 h after dark 3.3979999999999997 2.885 3.911 12 h after dark 1.7528100000000002 1.31159 2.19403