Table 6. Shows key test in the differentiation of the virdidans streptococci. Most species can only be identified to viridans species group. The VP test aids in the identification and differentiation of the viridans streptococcal species and is a key reaction for the S. anginosus group.
Air Traffic Controller Salary. The average pay for an Air Traffic Controller is $84,815 per year. Experience has a moderate effect on income for this job. $38,929 - $148,967.
In 2011, air traffic controllers averaged $114,460 a year. But high salaries â and low ones, for that matter â can skew the average, and median wage is often a better indication of earnings. Half of all air traffic controllers earned less than $113,540 a year, according to the Bureau of Labor Statistics. The top 10 percent made just over $169,000, while the bottom 10 percent made less than $61,650 annually. None of these figures, however, accounts for level of education.