condition mean min max 3 h after light 21.688166666666667 20.7671 22.7982 6 h after light 16.5341 13.7732 18.5537 9 h after light 18.609833333333334 17.4422 20.7526 12 h after light 21.398025 18.8293 23.951 3 h after dark 21.4457 18.9893 23.3462 6 h after dark 21.551099999999998 19.8396 22.8298 9 h after dark 18.0167 16.6835 19.2328 12 h after dark 16.90045 15.1168 18.6841