From attached file,• You select one the truck below which have non-MN only 2 shipments. Sampling data can not represent population.• After lead-time is 2hr 7min, Before lead-time is 2hr 55min. the gap is almost 48 min which is significantly reduce.• How many picking line before and after?• How much bulk pick improved?Data is right, calculation is also right. But measurement indicators are not cover the point1. Use more data to see the gap2. Improve on reading and reporting the result