condition mean min max 3 h after light 7.55627 7.08544 8.22941 6 h after light 6.53969 4.60764 7.75206 9 h after light 8.261586666666666 7.38972 9.78269 12 h after light 7.61258 6.78868 8.5227 3 h after dark 7.4935133333333335 6.57419 8.58356 6 h after dark 6.799803333333333 6.32644 7.04774 9 h after dark 5.331783333333333 3.76514 7.15257 12 h after dark 4.805585000000001 4.2853 5.32587