condition mean min max 2 h after light 1.3417881666666667 0.547938 2.76589 6 h after light 1.1568881666666666 0.0 2.04335 10 h after light 0.6956495 0.0 2.09259 14 h after light 0.275322 0.0 1.10027 18 h after light 1.2212511666666668 0.410604 1.95124 2 h after dark 0.72142 0.0 1.8469