user: Question: Which Coefficient has a 2009–10 of 6.166?
Columns: ['Rank 2014', 'Rank 2013', '2009–10', '2010–11', '2011–12', '2012–13', '2013–14', 'Coeff.', 'Teams', 'CL places', 'EL places', 'Total']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: [1.0, '1', '17.928', '18.214', '20.857', '17.714', '7.714', '82.427', '7/7', 4.0, 3.0, 7.0]
SQL:

assistant: SELECT "Coeff." FROM "Table" WHERE "2009–10" = '6.166';