condition mean min max 4 h after light 1.8574950000000001 1.73689 1.9781 8 h after light 1.39009 1.13054 1.64964 12 h after light 1.0055135000000002 0.865407 1.14562 4 h after dark 1.7059166666666667 1.38581 2.10223 8 h after dark 1.3580253333333332 0.959266 1.93983 12 h after dark 1.6589933333333333 1.3059 1.9935