Shipping a 40-foot (12-m) container by boat from Shanghai to Vancouver takes, on average, 16 days. However, due to several possible circumstances, shipping times can vary. Suppose a transportation analyst randomly selects 20 different shipments over a year-long period and records the number of days that it takes for a container to travel from Shanghai to Vancouver. The resulting data in numbers of days are given below. Construct a stem-and-leaf plot for the data. Comment on any observations that you glean from this plot.

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25 17 12 18 23 16 27 26 19 19 32 18 28 18 20 32 31 30 13 24