condition mean min max 2 h after light 1.6952915 0.663699 2.51978 6 h after light 1.045309 0.679314 1.35824 10 h after light 1.8217516666666667 1.34216 2.34373 14 h after light 1.3841515 0.605769 1.84442 18 h after light 1.6171008333333332 0.85378 2.49716 2 h after dark 2.503423333333333 1.49355 4.13634