condition mean min max 0 h after light 4.25892 3.24665 5.27119 4 h after light 2.906795 2.28144 3.53215 8 h after light 4.15576 4.10262 4.2089 4 h after dark 6.39006 6.26729 6.51283 8 h after dark 3.487595 3.44687 3.52832 12 h after dark 2.42192 1.45344 3.3904