condition mean min max 0 h after light 2.32166 2.18122 2.4621 4 h after light 4.211040000000001 3.69534 4.72674 8 h after light 3.183305 2.6139 3.75271 4 h after dark 2.67729 1.78017 3.57441 8 h after dark 3.113945 3.02067 3.20722 12 h after dark 2.66046 2.16086 3.16006