condition mean min max 0 h after light 2.521985 2.41886 2.62511 4 h after light 1.944405 1.4377 2.45111 8 h after light 1.41422 1.29952 1.52892 4 h after dark 2.74418 2.63959 2.84877 8 h after dark 2.12873 1.58818 2.66928 12 h after dark 2.15372 1.87881 2.42863