A lab uses about 137 test kits each day. The actual number tends to vary. Usage can be approximated by a normal distribution that has a mean of 137 and a standard deviation of 7 test kits per day. A kit supplier delivers kits with a lead time of 4 days. If the policy is to maintain a stockout risk of 5 percent, what is the minimum number of test kits that must be on hand at reorder time? (Note: your answer number should have no decimal).