condition mean min max 0 h after light 3.3462699999999996 3.11846 3.57408 4 h after light 2.89314 2.61446 3.17182 8 h after light 1.734045 1.64306 1.82503 4 h after dark 3.34706 3.28373 3.41039 8 h after dark 2.735225 2.40463 3.06582 12 h after dark 3.12366 2.4179 3.82942