condition mean min max 4 h after light 192.4009075 145.720939 239.080876 8 h after light 145.784674 139.646176 151.923172 12 h after light 169.453893 159.050765 179.857021 4 h after dark 127.437444 114.232057 140.642831 8 h after dark 147.011628 141.879446 152.14381 12 h after dark 223.134475 223.134475 223.134475