condition mean min max 2 h after light 1.4398646666666668 0.941578 1.9191 6 h after light 1.068708 0.448208 1.72057 10 h after light 1.62299 0.84473 2.65042 14 h after light 1.2663676666666666 0.842387 2.16864 18 h after light 1.2386083333333333 0.91105 1.6794 2 h after dark 1.1528195 0.864648 1.77252