condition mean min max 3 h after light 4.87925 4.27684 5.9498 6 h after light 8.907336666666666 6.84172 11.2499 9 h after light 10.197356666666666 9.28737 11.0326 12 h after light 6.7093875 1.68537 9.17304 3 h after dark 3.6991733333333334 2.44805 4.46879 6 h after dark 1.65881 1.29273 1.93038 9 h after dark 1.3539999999999999 0.98465 1.95921 12 h after dark 1.718055 1.71314 1.72297