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.
1 Average monthly temperatures vary by 24.5 Â°C (44.1Â°F). This indicates that the continentality type is continental, subtype subcontinental. 2  Total annual Precipitation averages 156 mm (6.1 inches) which is equivalent to 156 Litres/m (3.83 Gallons/ft).  On average there are 3244 hours of sunshine per year.