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:
| Series # | Title | Directed by | Written by | U.S. viewers (million) | Original airdate | Production Code |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | " Premiere " | Doug Liman | Josh Schwartz | 7.5 | August5,2003 | 475197.0 |
| 2.0 | "The Model Home" | Doug Liman | Allan Heinberg & Josh Schwartz | 7.9 | August12,2003 | 176501.0 |
| 3.0 | "The Gamble" | Ian Toynton | Jane Espenson | 8.0 | August19,2003 | 176502.0 |
| 4.0 | "The Debut" | Daniel Attias | Allan Heinberg & Josh Schwartz | 8.6 | August26,2003 | 176503.0 |
| 5.0 | "The Outsider" | Jesús Salvador Treviño | Melissa Rosenberg | 9.1 | September2,2003 | 176504.0 |
| 6.0 | "The Girlfriend" | Steve Robman | Josh Schwartz & Debra J. Fisher | 9.1 | September9,2003 | 176505.0 |
| 7.0 | "The Escape" | Sanford Bookstaver | Josh Schwartz | 8.8 | September16,2003 | 176506.0 |
| 8.0 | "The Rescue" | Michael Lange | Melissa Rosenberg & Allan Heinberg | 9.27 | October29,2003 | 176507.0 |
| 9.0 | "The Heights" | Patrick Norris | Debra J. Fisher & Erica Messer | 7.52 | November5,2003 | 176508.0 |
| 10.0 | "The Perfect Couple" | Michael Fresco | Allan Heinberg | 8.28 | November12,2003 | 176509.0 |
| 11.0 | "The Homecoming" | Keith Samples | Josh Schwartz & Brian Oh | 9.03 | November19,2003 | 176510.0 |
| 12.0 | "The Secret" | James Marshall | Allan Heinberg & Josh Schwartz | 6.9 | November26,2003 | 176511.0 |
| 13.0 | "The Best Chrismukkah Ever" | Sanford Bookstaver | Stephanie Savage | 9.27 | December3,2003 | 176512.0 |
| 14.0 | "The Countdown" | Michael Fresco | Josh Schwartz | 7.99 | December17,2003 | 176513.0 |
| 15.0 | "The Third Wheel" | Sandy Smolan | Melissa Rosenberg | 9.4 | January7,2004 | 176514.0 |
| 16.0 | "The Links" | Michael Lange | Debra J. Fisher & Erica Messer | 8.9 | January14,2004 | 176515.0 |
| 17.0 | "The Rivals" | Ian Toynton | Josh Schwartz | 12.72 | January21,2004 | 176516.0 |
| 18.0 | "The Truth" | Rodman Flender | Allan Heinberg | 12.70 | February11,2004 | 176517.0 |
| 19.0 | "The Heartbreak" | Lev L. Spiro | Josh Schwartz | 10.95 | February18,2004 | 176518.0 |
| 20.0 | "The Telenovela" | Sanford Bookstaver | Stephanie Savage | 9.56 | February25,2004 | 176519.0 |
| 21.0 | "The Goodbye Girl" | Patrick Norris | Josh Schwartz | 10.27 | March3,2004 | 176520.0 |
| 22.0 | "The L.A." | David M. Barrett | Josh Schwartz | 11.09 | March24,2004 | 176521.0 |
| 23.0 | "The Nana" | Michael Lange | Allan Heinberg | 11.37 | March31,2004 | 176522.0 |
| 24.0 | "The Proposal" | Helen Shaver | Liz Friedman & Josh Schwartz | 10.49 | April14,2004 | 176523.0 |
| 25.0 | "The Shower" | Sandy Smolan | J. J. Philbin | 10.13 | April21,2004 | 176524.0 |
| 26.0 | "The Strip" | James Marshall | Allan Heinberg | 10.52 | April28,2004 | 176525.0 |
Question:
When debra j. fisher & erica messer are the writers and the director is patrick norris what is the series number?
Answer:
9.0