condition mean min max 2 h after light 1.2869433333333333 0.0 4.01561 6 h after light 2.232255 0.0 7.65903 10 h after light 1.88506 0.0 7.77199 14 h after light 1.377955 0.0 4.26865 18 h after light 2.0187816666666665 0.0 4.39916 2 h after dark 1.5300566666666666 0.0 6.01403