At the stadium, there are five lines for arriving customers, each staffed by a single worker. The arrival rate for customers is 108 per hour and each customer takes (on average) 1.9 minutes for a worker to process. The coefficient of variation for arrival time is 1 and the coefficient of variation for service time is 1.3. How much time (in minutes) will an average customer spend in queue? Note: Round your answer to 3 decimal places