condition mean min max 0 h after light 18.6643 17.1107 20.2179 4 h after light 10.338999999999999 9.9491 10.7289 8 h after light 14.56235 12.1537 16.971 4 h after dark 19.00955 12.4959 25.5232 8 h after dark 10.414100000000001 10.3704 10.4578 12 h after dark 15.01108 9.42926 20.5929