condition mean min max 0 h after light 8.006184999999999 6.54332 9.46905 2 h after light 9.242435 8.48919 9.99568 4 h after light 7.96801 7.62942 8.3066 8 h after light 7.296894999999999 6.97906 7.61473 12 h after light 15.03515 12.9281 17.1422 2 h after dark 14.2981 13.6877 14.9085 4 h after dark 9.521465 8.55713 10.4858 8 h after dark 12.7745 11.7032 13.8458 12 h after dark 8.54223 8.03878 9.04568