condition mean min max 0 h after light 8.77514 8.64419 8.90609 4 h after light 5.657455000000001 5.5564 5.75851 8 h after light 4.72087 4.49371 4.94803 4 h after dark 7.939375 7.29766 8.58109 8 h after dark 8.32329 8.1001 8.54648 12 h after dark 8.770085 8.36749 9.17268