condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0540855 0.0 0.216342 3 h after dark 0.09008 0.0 0.27024 6 h after dark 0.0 0.0 0.0 9 h after dark 0.11644633333333333 0.0 0.349339 12 h after dark 0.0 0.0 0.0