condition mean min max 4 h after light 1046.9607 732.118816 1361.802584 8 h after light 404.866035 287.321909 522.410161 12 h after light 850.710198 816.119931 885.300465 4 h after dark 179.222062 85.77073 272.673394 8 h after dark 558.911358 425.248229 692.574487 12 h after dark 486.980271 486.980271 486.980271