condition mean min max 2 h after light 3.8687816666666666 0.0 11.1662 6 h after light 3.138255 0.0 4.21291 10 h after light 0.884665 0.0 2.22866 14 h after light 1.9869666666666665 0.0 4.36783 18 h after light 2.2775525 0.947235 3.51777 2 h after dark 4.97727 0.0 9.05568