condition mean min max 0 h after light 2.735235 2.41959 3.05088 4 h after light 16.70035 14.3507 19.05 8 h after light 5.96416 5.31411 6.61421 4 h after dark 0.5938915 0.438695 0.749088 8 h after dark 1.57702 1.32565 1.82839 12 h after dark 4.002935 2.56817 5.4377