condition mean min max 0 h after light 8.05171 7.04695 9.05647 2 h after light 5.41673 4.82774 6.00572 4 h after light 7.86819 7.26349 8.47289 8 h after light 7.40331 7.05339 7.75323 12 h after light 7.008535 6.3794 7.63767 2 h after dark 5.825125 5.26176 6.38849 4 h after dark 6.364605 6.19779 6.53142 8 h after dark 8.961365 8.87998 9.04275 12 h after dark 8.7265 7.1392 10.3138