condition mean min max 2 h after light 4.546641666666667 3.9722 5.30388 6 h after light 2.6587366666666665 2.17284 3.48008 10 h after light 2.4837345 0.394827 3.65735 14 h after light 2.435783333333333 1.70033 3.34786 18 h after light 2.92994 1.85874 4.05943 2 h after dark 2.175905 1.76506 2.55447