condition mean min max 0 h after light 17.65325 15.8973 19.4092 2 h after light 13.19965 13.0028 13.3965 4 h after light 10.66815 10.2998 11.0365 8 h after light 12.3002 11.9298 12.6706 12 h after light 21.2357 17.9201 24.5513 2 h after dark 16.21285 15.366 17.0597 4 h after dark 17.487499999999997 16.3939 18.5811 8 h after dark 18.7297 16.6755 20.7839 12 h after dark 20.57285 20.5631 20.5826