condition mean min max 4 h after light 0.47579099999999996 0.426341 0.525241 8 h after light 0.281149 0.216424 0.345874 12 h after light 0.7770245 0.758627 0.795422 4 h after dark 1.72895 1.40809 2.05386 8 h after dark 0.801052 0.584811 1.13701 12 h after dark 0.362849 0.168795 0.568183