In the automobile industry, in order to determine whether exhaust gas regulations are met, a portable emission measuring device (PEMS) is installed in an actual vehicle and exhaust gas is measured while driving on an actual road. The calculation method for determination uses the Moving Average Window (MAW) technique, which sets one specified vehicle as one Window, divides the driving data into countless Windows, and then draws the cumulative distribution function (CDF) for the CF (Conformity Factor), which is the value obtained by dividing the exhaust gas emissions within the Window by the reference value, and uses the CF value corresponding to 90% as the judgment criterion. The calculation above was minimized by using JMP's basic function, Formula, to perform Window loop calculation and save the result values in list format. In addition, Data Interactive, an excellent JMP function, allows you to grasp in real time how the result values change when a specific area is improved or removed from the driving data, making it easy to predict the improvement effect.
