condition mean min max 4 h after light 172.860559 155.482248 190.23887 8 h after light 193.02745149999998 168.284385 217.770518 12 h after light 157.5672905 154.168279 160.966302 4 h after dark 119.688008 101.704245 137.671771 8 h after dark 115.53380200000001 92.01774 139.049864 12 h after dark 112.655681 112.655681 112.655681