condition mean min max 0 h after light 20.8232 19.6229 22.0235 2 h after light 0.6526195 0.468739 0.8365 4 h after light 5.1905 4.24219 6.13881 8 h after light 5.161825 3.88057 6.44308 12 h after light 2.18251 1.42974 2.93528 2 h after dark 3.33623 2.80398 3.86848 4 h after dark 6.727355 5.8304 7.62431 8 h after dark 5.78632 4.52863 7.04401 12 h after dark 5.4429300000000005 4.45668 6.42918