condition mean min max 4 h after light 6.9371833333333335 2.76638 9.98863 8 h after light 5.949809999999999 1.09238 8.87829 12 h after light 7.463286666666667 2.9444 11.9419 4 h after dark 8.85969 6.37285 11.0519 8 h after dark 7.18707 5.33384 9.19053 12 h after dark 7.2355133333333335 5.56535 10.0162