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) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 27 | 2 | "iStage an Intervention" | Jonathan Goldstein | Karey Dornetto | October4,2008 | 205 | 3.9 |
| 28 | 3 | "iOwe You" | David Kendall | Jake Farrow | October11,2008 | 206 | 4.4 |
| 29 | 4 | "iHurt Lewbert" | Russ Reinsel | Ethan Banville | October18,2008 | 207 | 4.0 |
| 33 | 8 | "iPie" | Roger Christiansen | Andrew Hill Newman | November15,2008 | 208 | 4.1 |
| 34 | 9 | "iChristmas" | Steve Hoefer | Dan Schneider | December13,2008 | 209 | 3.3 |
| 35 | 10 | "iKiss" | Steve Hoefer | Dan Schneider | January3,2009 | 210 | 6.0 |
| 36 | 11 | "iGive Away a Car" | Steve Hoefer | George Doty IV | January17,2009 | 211 | 5.1 |
| 37 | 12 | "iRocked the Vote" | Russ Reinsel | Andrew Hill Newman | February7,2009 | 215 | 5.2 |
| 38 | 13 | "iMeet Fred" | Adam Weissman | Dan Schneider | February16,2009 | 212 | 5.1 |
| 39 | 14 | "iLook Alike" | David Kendall | Dan Schneider | March7,2009 | 213 | 6.3 |
| 40 | 15 | "iWant My Website Back" | Adam Weissman | Matt Fleckenstein | March21,2009 | 219 | 3.9 |
| 41 | 16 | "iMake Sam Girlier" | Roger Christiansen | Jake Farrow | April11,2009 | 216 | 5.1 |
| 42 | 17 | "iGo Nuclear" | David Kendall | George Doty IV & Andrew Hill Newman | April22,2009 | 214 | 4.5 |
| 43-44 | 18-19 | " iDate a Bad Boy " | Steve Hoefer | Dan Schneider | May9,2009 | 217/225 | 6.5 |
| 45 | 20 | "iReunite with Missy" | Adam Weissman | Jake Farrow | May16,2009 | 218 | 4.3 |
| 46 | 21 | "iTake on Dingo" | David Kendall | Jake Farrow | June13,2009 | 226 | 3.4 |
| 47 | 22 | "iMust Have Locker 239 " | David Kendall | Eric Goldberg & Peter Tibbals | June27,2009 | 220 | 4.0 |
| 48 | 23 | "iTwins" | Russ Reinsel | Eric Goldberg & Peter Tibbals | July11,2009 | 224 | 5.2 |
Question:
What episode number in the series was "igo nuclear"?
Answer:
17.0