The British love to assemble in an orderly line. ‘The Queue Tracker’ (https://www.itv.com/news/2022-09-14/official-queen-lying-in-state-queue-tracker-shows-length-and-end-of-line-live) tracked the queue to view Queen Elizabeth II lying in-state at Westminster Hall. On 15 September, it showed the queue to be 4.9 miles long with an estimated wait time of 9 hours. ABC news stated that in the hall, people file each side of the coffin and stop to pay their respects for 10 seconds.
Based on this assumption, how many people on average, would there be per 10 metres of queue?
Is this number realistic? What would be a better estimate of the average stopping time per person?