condition mean min max 4 h after light 2.155585 1.9963 2.31487 8 h after light 3.4520049999999998 2.94936 3.95465 12 h after light 1.77502 1.09217 2.45787 4 h after dark 2.11943 1.09265 3.03574 8 h after dark 3.2999533333333333 2.70092 4.11612 12 h after dark 2.9698866666666666 1.58787 5.3462