condition mean min max 2 h after light 0.8875296666666667 0.450867 1.13662 6 h after light 0.6195565 0.438667 0.810107 10 h after light 0.7321645 0.228695 1.14808 14 h after light 1.082737 0.632281 1.57908 18 h after light 1.0273526666666666 0.271422 1.99804 2 h after dark 1.1168685 0.704876 1.474