condition mean min max 4 h after light 11.312446000000001 10.299981 12.324911 8 h after light 13.3123765 12.396178 14.228575 12 h after light 17.4182645 13.629286 21.207243 4 h after dark 18.527439 16.571147 20.483731 8 h after dark 16.3122005 15.628301 16.9961 12 h after dark 28.843619 28.843619 28.843619