Answer based on context:

The Steelers stayed home for a game against the Jets. In the first quarter, the Jets took an early 3-0 lead when Nick Folk kicked a 30-yard field goal. Later on, the Steelers took the lead when Ben Roethlisberger found Sammie Coates for a 72-yard touchdown pass to make it 7-3. The Jets scored 10 straight points in the second quarter: Folk kicked a 48-yard field goal to come within a point, 7-6. This would be followed byRyan Fitzpatrick finding Brandon Marshall on a 15-yard touchdown pass to make it 13-7. The Steelers wrapped up the scoring of the half when Roethlisberger found Jesse James on a 1-yard touchdown pass to make it 14-13 at halftime. In the second half it was all Steelers. Starting in the third quarter, Chris Boswell put the team up by 4 with a 47-yard field goal to make it 17-13. In the fourth quarter, they would score 2 touchdowns: Roethlisberger found Antonio Brown on a 5-yard pass and then Coates on another 5-yard pass to make the score 24-13 and the eventual final score 31-13. With the win, the Steelers improved to 4-1. With the Ravens' loss to the Redskins, the team is also now in outright first place in the AFC North. This would be the final game the Steelers would wear their 1934 throwback uniforms.

How many points did the Steelers score in the third quarter?
3