condition mean min max 4 h after light 8.475265 7.95142 8.99911 8 h after light 9.111699999999999 8.78401 9.43939 12 h after light 7.6871100000000006 7.59321 7.78101 4 h after dark 9.443670000000001 9.38079 9.50655 8 h after dark 6.841455 6.79775 6.88516 12 h after dark 8.801545 8.69822 8.90487