condition mean min max 2 h after light 2.18962 0.86582 3.91049 6 h after light 4.33997 1.63109 9.46312 10 h after light 3.0118774999999998 0.330225 6.71575 14 h after light 3.446798333333333 1.35881 10.8278 18 h after light 3.99723 1.6065 7.64768 2 h after dark 3.4635766666666665 1.98808 5.24505