condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0334085 0.0 0.066817 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0066721 0.0 0.0133442 12 h after dark 0.0 0.0 0.0