condition mean min max 0 h after light 18.51305 18.0365 18.9896 2 h after light 14.20415 13.4649 14.9434 4 h after light 14.161750000000001 13.7565 14.567 8 h after light 14.51125 12.4069 16.6156 12 h after light 12.0261 10.1998 13.8524 2 h after dark 11.95725 10.269 13.6455 4 h after dark 12.4255 12.0125 12.8385 8 h after dark 11.79835 10.4986 13.0981 12 h after dark 15.3104 14.1984 16.4224