condition mean min max 4 h after light 155.329011 151.213873 159.444149 8 h after light 142.9949885 138.450228 147.539749 12 h after light 173.037653 157.942699 188.132607 4 h after dark 220.5652645 180.232057 260.898472 8 h after dark 212.9189225 182.401385 243.43646 12 h after dark 233.06537 233.06537 233.06537