condition mean min max 0 h after light 4.114165 3.50254 4.72579 2 h after light 2.83406 2.67398 2.99414 4 h after light 4.363035 4.0284 4.69767 8 h after light 4.524765 4.43709 4.61244 12 h after light 5.1918 5.15942 5.22418 2 h after dark 5.50469 5.38415 5.62523 4 h after dark 5.091285 4.75146 5.43111 8 h after dark 5.578405 5.11617 6.04064 12 h after dark 4.464005 4.03787 4.89014