condition mean min max 0 h after light 1.918095 1.57399 2.2622 4 h after light 2.65226 2.30501 2.99951 8 h after light 2.78039 2.34248 3.2183 4 h after dark 3.8005 3.44757 4.15343 8 h after dark 4.706035 4.68721 4.72486 12 h after dark 2.84208 2.06441 3.61975