condition mean min max 4 h after light 2.027705 0.633245 3.17059 8 h after light 1.263904 0.407182 1.69921 12 h after light 2.37009 1.37122 3.05863 4 h after dark 2.938336666666667 1.80526 3.55384 8 h after dark 3.034826666666667 2.01345 3.71539 12 h after dark 2.7203 1.99834 3.85939