condition mean min max 4 h after light 4.237045 3.81472 4.65937 8 h after light 4.252505 4.10364 4.40137 12 h after light 4.3724 4.11363 4.63117 4 h after dark 6.182869999999999 5.44462 6.92112 8 h after dark 5.279755 5.04454 5.51497 12 h after dark 5.389530000000001 5.22442 5.55464