condition mean min max 4 h after light 1.383535 1.35835 1.40872 8 h after light 2.022635 1.98594 2.05933 12 h after light 1.71838 1.61713 1.81963 4 h after dark 1.97277 1.49592 2.24433 8 h after dark 1.387641 0.731223 1.86368 12 h after dark 1.1626733333333332 1.01206 1.40001