condition mean min max 2 h after light 2.10163 1.0496 3.47736 6 h after light 3.61478 1.93043 5.6943 10 h after light 2.9083 1.52205 5.48322 14 h after light 2.9904408333333334 0.835055 5.54518 18 h after light 2.018117833333333 0.493637 4.47061 2 h after dark 2.6192596666666668 0.687248 5.08949