condition mean min max 0 h after light 4.87359 4.06555 5.68163 4 h after light 1.4138265 0.827023 2.00063 8 h after light 2.04235 1.60603 2.47867 4 h after dark 1.5998235 0.398577 2.80107 8 h after dark 1.808725 1.19908 2.41837 12 h after dark 2.607875 2.37875 2.837