condition mean min max 2 h after light 1.7683115 0.0 4.14063 6 h after light 1.2948023333333334 0.0 5.90591 10 h after light 2.1050999999999997 0.0 4.10931 14 h after light 2.0756633333333334 0.0 6.13467 18 h after light 2.1940625 0.0 4.13711 2 h after dark 4.576782666666666 0.823986 15.9192