1 That is, the macro generates a random number for each observation, the data set is sorted by the random number, and then the first num observations are selected.  Then, call the macro select three times once for each of the city data sets .... scollege, pmatilda, and bellefnt .... selecting five observations from each.
A humid continental climate is marked by variable weather patterns and a large seasonal temperature variance. Places with more than three months of average daily temperatures above 10 Â°C (50 Â°F) and a coldest month temperature below â3 Â°C (27 Â°F) and which do not meet the criteria for an arid or semiarid climate, are classified as continental.
The humid continental climate designation belongs to central and northern Kazakhstan, eastern Uzbekistan, central Kyrgyzstan and nearly all of Tajikistan. This area receives more precipitation on average than the rest of central Asia, at least 20 inches per year. Summer temperatures can be sultry in the southern belt of this climate zone, but tend to remain cooler farther north.