condition mean min max 2 h after light 1.319869 0.48528 3.33334 6 h after light 1.3483725 0.358509 2.63276 10 h after light 1.0316803333333333 0.0 2.81487 14 h after light 1.5497496666666668 0.683683 2.65754 18 h after light 1.6022833333333333 1.15266 1.90799 2 h after dark 1.709165 0.0 4.23562