user: Question: What is the weight of the shell that reached its maximum height at 40° in 12.6 seconds?
Columns: ['m/v ft/s', 'Shell (lb)', 'Time to ft (m) at 25° (seconds)', 'Time to ft (m) at 40° (seconds)', 'Time to ft (m) at 55° (seconds)', 'Max. height (ft)']
Types: ['real', 'real', 'text', 'real', 'real', 'real']
Sample row: [1990.0, 12.5, '10.1', 15.5, 22.1, 19000.0]
SQL:

assistant: SELECT "Shell (lb)" FROM "Table" WHERE "Time to ft (m) at 40° (seconds)" = 12.6;