user: Question: How many times was the viewer target group 0.63?
Columns: ['Year', 'Timeslot', 'Network', 'Episodes', 'Viewers (in millions/overall)', 'Viewers (in millions/target group 14-49)', 'Market share (overall)', 'Market share (target group 14-49)']
Types: ['real', 'text', 'text', 'real', 'text', 'text', 'text', 'text']
Sample row: [2007.0, 'Monday-Friday 5:50pm', 'Das Erste', 244.0, '2.23', '0.63', '13,7%', '10,8%']
SQL:

assistant: SELECT COUNT("Market share (target group 14-49)") FROM "Table" WHERE "Viewers (in millions/target group 14-49)" = '0.63';