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:
| No. in series | No. in season | Title | Directed by | Written by | Original air date | Production code | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 412.0 | 1.0 | "Rumble" | Constantine Makris | Christopher Ambrose & Richard Sweren | November 5, 2008 | 19003.0 | 7.85 |
| 413.0 | 2.0 | "Challenged" | Fred Berner | Ed Zuckerman & René Balcer | November 12, 2008 | 19001.0 | 7.91 |
| 414.0 | 3.0 | "Lost Boys" | Chris Zalla | Richard Sweren & Gina Gionfriddo | November 19, 2008 | 19004.0 | 7.58 |
| 415.0 | 4.0 | "Falling" | Michael Watkins | Keith Eisner & Stephanie Sengupta | November 26, 2008 | 19005.0 | N/A |
| 417.0 | 6.0 | "Sweetie" | Mario Van Peebles | Luke Schelhaas & Ed Zuckerman | December 10, 2008 | 19007.0 | 7.46 |
| 418.0 | 7.0 | "Zero" | Marisol Torres | Luke Schelhaas & Ed Zuckerman | December 17, 2008 | 19002.0 | 6.95 |
| 419.0 | 8.0 | "Chattel" | Jim McKay | Matthew McGough & William N. Fordes | January 7, 2009 | 19009.0 | 10.11 |
| 420.0 | 9.0 | "By Perjury" | Darnell Martin | Christopher Ambrose & Richard Sweren | January 14, 2009 | 19010.0 | 8.20 |
| 421.0 | 10.0 | "Pledge" | Alex Chapple | Gina Gionfriddo & Richard Sweren | January 21, 2009 | 19008.0 | 8.49 |
| 422.0 | 11.0 | "Lucky Stiff" | Marc Levin | Matthew McGough & Ed Zuckerman | January 28, 2009 | 19012.0 | 8.89 |
| 423.0 | 12.0 | "Illegitimate" | Josh Marston | Keith Eisner & Stephanie Sengupta | February 4, 2009 | 19011.0 | 8.69 |
| 424.0 | 13.0 | "Crimebusters" | Alex Chapple | Richard Sweren & Gina Gionfriddo | February 11, 2009 | 19013.0 | 7.52 |
| 425.0 | 14.0 | "Rapture" | Fred Berner | Luke Schelhaas & Ed Zuckerman | February 18, 2009 | 19014.0 | 7.15 |
| 426.0 | 15.0 | "Bailout" | Jean de Segonzac | Christopher Ambrose & Richard Sweren | March 11, 2009 | 19015.0 | 7.58 |
| 427.0 | 16.0 | "Take-out" | Jim McKay | Keith Eisner & William N. Fordes | March 18, 2009 | 19016.0 | 7.07 |
| 428.0 | 17.0 | "Anchors Away" | Alex Chapple | Matthew McGough & Ed Zuckerman | March 25, 2009 | 19017.0 | 7.25 |
| 429.0 | 18.0 | "Promote This!" | Michael Watkins | Christopher Ambrose & Richard Sweren | April 29, 2009 | 19019.0 | 7.69 |
| 430.0 | 19.0 | "All New" | Roger Young | Keith Eisner & William N. Fordes | May 6, 2009 | 19020.0 | 8.14 |
| 431.0 | 20.0 | "Exchange" | Ernest Dickerson | Stephanie Sengupta | May 13, 2009 | 19018.0 | 7.82 |
| 432.0 | 21.0 | "Skate or Die" | Norberto Barba | Luke Schelhaas & Ed Zuckerman | May 20, 2009 | 19021.0 | 6.70 |
Question:
How many different series number does the episode titled "Skate or Die" have?
Answer:
1.0