condition mean min max 3 h after light 4.04973 3.81009 4.52462 6 h after light 3.5831766666666667 2.83491 4.10735 9 h after light 2.9801366666666667 2.30897 3.73254 12 h after light 3.82884 2.98225 4.62353 3 h after dark 7.243143333333333 6.88137 7.45446 6 h after dark 7.6399799999999995 6.92773 8.60756 9 h after dark 5.1871599999999995 4.83067 5.63441 12 h after dark 3.0223 2.7083 3.3363