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.
As of May 2012, airline pilots, copilots and flight engineers earn an average annual salary of $114,200. The average salary of commercial pilots, as of May 2013, was $74,470, according to the BLS.