A pressure measurement can further be described by the type of measurement being performed. There are three types of pressure measurements: absolute, gauge, and differential. Absolute pressure measurement is measured relative to a vacuum (Figure 2).
For example, the median tenure of workers ages 55 to 64 (10.1 years) was more than three times that of workers ages 25 to 34 years (2.8 years). Also, a larger proportion of older workers than younger workers had 10 years or more of tenure.
(See table 2.) --Usual weekly earnings of full-time workers varied by age. Among men, those ages 55 to 64 and 45 to 54 had the highest median weekly earnings, at $1,113 and $1,102, respectively. For women, usual weekly earnings were highest for those ages 35 to 44 ($859) and 45 to 54 ($840).