condition mean min max 0 h after light 2.34701 2.34492 2.3491 4 h after light 3.156375 2.83741 3.47534 8 h after light 8.120995 7.59495 8.64704 4 h after dark 9.777935 8.30257 11.2533 8 h after dark 5.269325 4.92248 5.61617 12 h after dark 3.28116 2.50143 4.06089