condition mean min max 3 h after light 2.2547800000000002 1.1325 3.19435 6 h after light 1.5614966666666668 1.2476 1.81066 9 h after light 1.65815 1.08637 1.98443 12 h after light 2.8396266666666667 1.74252 4.75085 3 h after dark 2.5364433333333336 1.96904 2.96328 6 h after dark 2.90022 1.8765 3.45276 9 h after dark 7.363980000000001 1.9395 18.1596 12 h after dark 2.15456 1.34824 2.6449