condition mean min max 0 h after light 3.8633450000000003 3.37143 4.35526 4 h after light 6.067365 5.07478 7.05995 8 h after light 5.1630400000000005 5.03794 5.28814 4 h after dark 7.50123 6.99941 8.00305 8 h after dark 7.539289999999999 7.21397 7.86461 12 h after dark 3.893715 2.3724 5.41503