condition mean min max 4 h after light 1.85064 1.79658 1.9047 8 h after light 5.68661 5.00294 6.37028 12 h after light 7.775305 7.2521 8.29851 4 h after dark 6.9656633333333335 6.74284 7.15901 8 h after dark 2.294086666666667 1.80567 2.61586 12 h after dark 1.8229199999999999 1.6496 2.02269