Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Game | Date | Opponent | Result | Oilers points | Opponents | Oilers first downs | Record | Attendance |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Sept. 3 | at Atlanta Falcons | Loss | 14.0 | 20.0 | 13.0 | 0–1 | 57328.0 |
| 2.0 | Sept. 10 | at Kansas City Chiefs | Win | 20.0 | 17.0 | 15.0 | 1–1 | 40213.0 |
| 3.0 | Sept. 17 | San Francisco 49ers | Win | 20.0 | 19.0 | 23.0 | 2–1 | 46161.0 |
| 4.0 | Sept. 24 | Los Angeles Rams | Loss | 6.0 | 10.0 | 10.0 | 2–2 | 45749.0 |
| 5.0 | Oct. 1 | at Cleveland Browns | Win | 16.0 | 13.0 | 20.0 | 3–2 | 72776.0 |
| 6.0 | Oct. 8 | at Oakland Raiders | Loss | 17.0 | 21.0 | 20.0 | 3–3 | 52550.0 |
| 7.0 | Oct. 15 | Buffalo Bills | Win | 17.0 | 10.0 | 17.0 | 4–3 | 47727.0 |
| 8.0 | Oct. 23 | at Pittsburgh Steelers | Win | 24.0 | 17.0 | 22.0 | 5–3 | 48021.0 |
| 9.0 | Oct. 29 | at Cincinnati Bengals | Loss | 13.0 | 28.0 | 15.0 | 5–4 | 50532.0 |
| 10.0 | Nov. 5 | Cleveland Browns | Win | 14.0 | 10.0 | 18.0 | 6–4 | 45827.0 |
| 11.0 | Nov. 12 | at New England Patriots | Win | 26.0 | 23.0 | 24.0 | 7–4 | 60356.0 |
| 12.0 | Nov. 20 | Miami Dolphins | Win | 35.0 | 30.0 | 23.0 | 8–4 | 50290.0 |
| 13.0 | Nov. 26 | Cincinnati Bengals | Win | 17.0 | 10.0 | 17.0 | 9–4 | 43245.0 |
| 14.0 | Dec. 3 | Pittsburgh Steelers | Loss | 3.0 | 13.0 | 9.0 | 9–5 | 54261.0 |
| 15.0 | Dec. 10 | at New Orleans Saints | Win | 17.0 | 12.0 | 16.0 | 10–5 | 63169.0 |
Question:
On Sept. 17, how many first downs did the oilers have?
Answer:
1.0