condition mean min max 0 h after light 0.2625465 0.175239 0.349854 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0859005 0.0 0.171801 8 h after dark 0.0861405 0.0 0.172281 12 h after dark 0.087346 0.0 0.174692