condition mean min max 4 h after light 3.51732 2.42954 4.6051 8 h after light 4.40311 4.33887 4.46735 12 h after light 5.660855 5.36791 5.9538 4 h after dark 6.564636666666667 6.33352 6.81936 8 h after dark 5.19941 4.88848 5.41133 12 h after dark 3.9672266666666665 3.75372 4.11271