condition mean min max 0 h after light 2.19654 1.61704 2.77604 4 h after light 2.11587 1.88572 2.34602 8 h after light 2.526475 2.09255 2.9604 4 h after dark 1.755525 1.43377 2.07728 8 h after dark 1.8585150000000001 1.83806 1.87897 12 h after dark 2.51264 2.50828 2.517