condition mean min max 4 h after light 0.652161 0.430574 0.873748 8 h after light 0.6138155 0.54526 0.682371 12 h after light 0.927622 0.795194 1.06005 4 h after dark 1.084366 0.480958 1.64968 8 h after dark 2.77779 1.99753 4.00563 12 h after dark 1.4980366666666667 1.36993 1.72965