condition mean min max 0 h after light 168.6265 163.708 173.545 4 h after light 8.08789 5.80058 10.3752 8 h after light 3.2043049999999997 3.07211 3.3365 4 h after dark 13.36245 10.2058 16.5191 8 h after dark 14.9729 14.6115 15.3343 12 h after dark 81.04055 44.5751 117.506