condition mean min max 2 h after light 3.005935 2.21901 3.81182 6 h after light 2.5282383333333334 1.71374 3.00379 10 h after light 1.8835183333333334 1.47804 2.30712 14 h after light 2.5768633333333333 1.16355 3.69399 18 h after light 2.791625 2.42841 3.82452 2 h after dark 3.390155 2.04372 4.86437