condition mean min max 0 h after light 4.03465 3.91598 4.15332 4 h after light 3.1556949999999997 3.1532 3.15819 8 h after light 3.63116 3.26068 4.00164 4 h after dark 3.56779 2.77271 4.36287 8 h after dark 3.86791 3.42212 4.3137 12 h after dark 3.929895 3.73916 4.12063