A huge body of air that has similar temperature, humidity, and air. pressure at any given height is called an. air mass. Scientists classify air. masses according to temperature and humidity. Four major types of air. masses inï¬uence the weather in North America: maritime tropical, continental tropical, maritime polar, and continental polar. Tropical, or. warm, air masses form in the tropics and have low air pressure.
It employed 28,490 RNs in May 2013 (as per the BLS). At that time, employment per 1,000 jobs for these professionals was 17.366. According to the survey of the Bureau of Labor Statistics, the average annual and per hour registered nurse salary in Oregon was $80,440 and $38.67, respectively, in May 2013.
Registered Nurse Average Salary: Mean Salaries for RNs. According to the Bureau of Labor Statistics lastest data (as of 2015), the average salary of a registered nurse in the United States is $71,000. The average hourly wage of a registered nurse is $34.14. Keep in mind that these are only averages, and that a registered nurse may make more or less than these amounts based on location, experience, and other factors. In addition, the starting salaries for an RN may be much less than the average salary.