condition mean min max 4 h after light 1.433385 1.16055 1.70622 8 h after light 1.57242 1.33845 1.80639 12 h after light 1.643475 1.56922 1.71773 4 h after dark 2.38166 2.12972 2.70127 8 h after dark 1.4735833333333332 1.22414 1.62626 12 h after dark 1.48982 1.33201 1.58248