condition mean min max 0 h after light 4.00609 3.78709 4.22509 4 h after light 2.67131 2.4924 2.85022 8 h after light 4.017295 3.96007 4.07452 4 h after dark 4.596295 4.14957 5.04302 8 h after dark 4.95079 4.38019 5.52139 12 h after dark 3.509655 3.10904 3.91027