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 Salary. As stated on the bls.gov website, the median average wage for a RN (Registered Nurse) was around $69,790 or about $33.55 as an hourly rate in 2014. The lowest paid 10% of employed RNâs made less than $45,880 ($22.06 per hour), and the upper 10% percent made more than $98,880 ($47.54 per hour).However, the median annual wages for RNâS will depend on the type of healthcare industry worked in.inally, in offices of physicians, a RN can earn an average of $58,420 ($30.02 per hour). In 2014, the top paying state for a registered nurse was California with an average annual salary of $98,440 ($47.31 an hour).