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.
Based on the figures of FAA, as of 2010, the starting pay for new ATCs who was able to complete their OJT receive a yearly pay of $118,000 or $9,833 per month on an average. Further, the average salary of air traffic control specialists including trainees is $104,000 ($8,666 monthly) on an average.