condition mean min max 2 h after light 11.516875 4.00868 16.1014 6 h after light 8.260813333333333 2.99583 11.1459 10 h after light 7.215365 0.0 10.705 14 h after light 7.549225 0.0 17.4591 18 h after light 9.942581666666667 6.2222 19.2058 2 h after dark 9.436770000000001 4.03972 17.504