Description

The two maps at the top of this plate show isothermal lines for summer and for the entire year. Temperature units are in Fahrenheit. The next four maps show rainfall and snowfall for Eastern and Western Canada, in inches. The five maps at the bottom of the plate show isobaric lines (i.e. barometric pressure). One map shows the annual average, while the other four cover seasons (January-March, April-June, July-September, and October-December). Barometric pressure is measured in inches of mercury.