condition mean min max 4 h after light 1.91774 1.55862 2.33482 8 h after light 1.810651 0.636543 2.82492 12 h after light 2.8146199999999997 1.75592 3.84381 4 h after dark 2.2227366666666666 1.51252 2.81182 8 h after dark 3.462413333333333 2.99214 3.98668 12 h after dark 3.68167 3.43054 4.14497