condition mean min max 0 h after light 7.1578 0.0 14.3156 2 h after light 2.20403 1.55185 2.85621 4 h after light 4.15613 3.78376 4.5285 8 h after light 0.0 0.0 0.0 12 h after light 2.786805 0.0 5.57361 2 h after dark 5.88475 0.0 11.7695 4 h after dark 6.65202 4.9527 8.35134 8 h after dark 4.323695 2.9354 5.71199 12 h after dark 12.681185 1.38487 23.9775