condition mean min max 4 h after light 2.863095 2.82942 2.89677 8 h after light 2.68291 2.65214 2.71368 12 h after light 2.7854200000000002 2.43573 3.13511 4 h after dark 3.426095 2.85927 3.99292 8 h after dark 3.74047 3.65557 3.82537 12 h after dark 3.633565 3.59224 3.67489