condition mean min max 0 h after light 8.769555 8.55993 8.97918 2 h after light 15.0835 13.7095 16.4575 4 h after light 12.3401 10.4453 14.2349 8 h after light 11.65185 11.0607 12.243 12 h after light 20.96685 20.7462 21.1875 2 h after dark 18.570349999999998 15.9236 21.2171 4 h after dark 14.72915 14.2969 15.1614 8 h after dark 13.78195 12.8373 14.7266 12 h after dark 13.06925 12.05 14.0885