condition mean min max 4 h after light 0.7923370000000001 0.770764 0.81391 8 h after light 0.556436 0.494453 0.618419 12 h after light 0.6707805 0.651363 0.690198 4 h after dark 2.2876433333333335 1.93952 2.5541 8 h after dark 0.8352339999999999 0.722714 1.04886 12 h after dark 1.1568433333333332 1.07899 1.30782