condition mean min max 4 h after light 1.982285 1.8834 2.08117 8 h after light 1.957885 1.90432 2.01145 12 h after light 2.119435 2.07875 2.16012 4 h after dark 3.1493849999999997 2.96691 3.33186 8 h after dark 3.796115 3.67774 3.91449 12 h after dark 3.8072749999999997 3.61636 3.99819