Each hardiness zone differs by 10 degrees F, so the difference in low winter temperatures between zones 6 and 7 is 10 degrees; between zones 6 and 8, 20 degrees; between zones 6 and 9, 30 degrees, and so on.
The median annual Dentist salary is $143,918, as of July 29, 2016, with a range usually between $128,516-$168,271, however this can vary widely depending on a variety of factors.
How Much Does a Dentist Make? How much money a dentist makes depends on a variety of factors, which include the location of the practice, whether the services offered are general or specialized, and the type of employment (self-employed dentists earn almost 50 percent more than those working for a clinic or private office).