condition mean min max 0 h after light 0.0876865 0.0 0.175373 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0649985 0.0 0.129997 8 h after dark 0.0706805 0.0 0.141361 12 h after dark 0.0 0.0 0.0