condition mean min max 4 h after light 1.836005 1.82204 1.84997 8 h after light 3.705265 3.3644 4.04613 12 h after light 2.97598 2.89307 3.05889 4 h after dark 5.016645 4.57281 5.46048 8 h after dark 3.18065 3.01188 3.34942 12 h after dark 2.562355 1.98884 3.13587