Use the frame bracketing concept along with the adjusted distance and apply it to the appropriate frame span. 189.7ft (Mark Tyler z330.4—z447.5) + 10.2 + .9 = 200.8ft 264-79 = 184+/24 = 7.666sec/200.8ft =  17.817mph 331-447 =116/18.3 = 6.338sec/200.8ft = 21.552mph                                                                        3.735mph