condition mean min max 2 h after light 1.381421 0.132385 2.51305 6 h after light 1.6622026666666667 0.650216 3.232 10 h after light 1.9521355 0.921483 3.18997 14 h after light 2.143161666666667 1.2452 3.10627 18 h after light 1.506886 0.769876 2.34226 2 h after dark 2.9066716666666665 1.19165 4.6606