condition mean min max 2 h after light 14.24772 4.86758 30.9657 6 h after light 12.031088333333333 6.43709 21.455 10 h after light 14.29335 10.6077 20.2167 14 h after light 12.01622 6.72402 18.8495 18 h after light 11.361126666666667 2.92428 28.7606 2 h after dark 9.745868333333334 4.46806 20.5523