TABLE 4 Christian County Speeds Comparison,,,,, Functional class,Sample size,Mileage,Estimated speed (mph),Measured speed (mph), 1,2,17.3,70.7,71.2, 2,6,35.1,56.4,60.3, 6,2,7.6,51.1,53.1, 7,6,52.4,54.0,54.7, 8,30,175.6,47.1,48.5, 9,74,188.6,35.7,41.2, 11,1,3.3,72.0,74.3, 12,—,—,—,—, 14,7,15.9,35.7,38.8, 16,26,51.6,31.2,30.5, 17,7,15.6,29.6,32.5, 19,64,68.2,23.0,23.2,