condition mean min max 0 h after light 18.57765 17.5702 19.5851 4 h after light 7.3063899999999995 6.25479 8.35799 8 h after light 7.08514 6.84386 7.32642 4 h after dark 9.92429 9.85678 9.9918 8 h after dark 10.11835 10.0644 10.1723 12 h after dark 12.300745 9.51879 15.0827