condition mean min max 0 h after light 7.1301000000000005 6.67392 7.58628 2 h after light 0.5881799999999999 0.511934 0.664426 4 h after light 0.9734579999999999 0.893936 1.05298 8 h after light 15.16705 14.3413 15.9928 12 h after light 16.67175 15.3627 17.9808 2 h after dark 15.792349999999999 15.5769 16.0078 4 h after dark 19.088 18.2873 19.8887 8 h after dark 20.5457 19.7838 21.3076 12 h after dark 9.017479999999999 8.67277 9.36219