condition mean min max 0 h after light 3.375135 2.93087 3.8194 2 h after light 1.147 1.08171 1.21229 4 h after light 1.688155 1.41062 1.96569 8 h after light 2.38566 2.06312 2.7082 12 h after light 2.855885 2.01406 3.69771 2 h after dark 2.09595 1.42928 2.76262 4 h after dark 2.120505 1.77912 2.46189 8 h after dark 2.292815 1.90853 2.6771 12 h after dark 1.691125 1.48194 1.90031