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.
The average annual salary, excluding overtime earnings, for air traffic controllers in the Federal Government which employs 90 percent of the total in nonsupervisory, supervisory, and managerial positions was $106,380 in May 2004.