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. | # | Title | Directed by | Written by | Original air date | Production code | U.S. viewers (million) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 45.0 | 1.0 | "Clone Cadets" | Dave Filoni | Cameron Litvack | September17,2010 | 3.01 | 2.42 |
| 46.0 | 2.0 | "ARC Troopers" | Kyle Dunlevy | Cameron Litvack | September17,2010 | 3.02 | 2.42 |
| 47.0 | 3.0 | "Supply Lines" | Brian Kalin O'Connell | Steven Melching & Eoghan Mahony | September24,2010 | 2.24 | 1.69 |
| 48.0 | 4.0 | "Sphere of Influence" | Kyle Dunlevy | Katie Lucas & Steven Melching | October1,2010 | 2.25 | 1.88 |
| 49.0 | 5.0 | "Corruption" | Giancarlo Volpe | Cameron Litvack | October8,2010 | 3.04 | 1.78 |
| 50.0 | 6.0 | "The Academy" | Giancarlo Volpe | Katie Lucas & Steven Melching | October15,2010 | 2.26 | 1.79 |
| 51.0 | 7.0 | "Assassin" | Kyle Dunlevy | Katie Lucas | October22,2010 | 2.21 | 1.85 |
| 52.0 | 8.0 | "Evil Plans" | Brian Kalin O'Connell | Steve Mitchell & Craig Van Sickle | November5,2010 | 3.03 | 1.84 |
| 53.0 | 9.0 | "Hunt for Ziro" | Steward Lee | Steve Mitchell & Craig Van Sickle | November12,2010 | 3.05 | 1.76 |
| 54.0 | 10.0 | "Heroes on Both Sides" | Kyle Dunlevy | Daniel Arkin | November19,2010 | 3.06 | 1.75 |
| 55.0 | 11.0 | "Pursuit of Peace" | Duwayne Dunham | Daniel Arkin | December3,2010 | 3.07 | 1.61 |
| 56.0 | 12.0 | "Nightsisters" | Giancarlo Volpe | Katie Lucas | January7,2011 | 3.08 | 1.86 |
| 57.0 | 13.0 | "Monster" | Kyle Dunlevy | Katie Lucas | January14,2011 | 3.10 | N/A |
| 58.0 | 14.0 | "Witches of the Mist" | Giancarlo Volpe | Katie Lucas | January21,2011 | 3.12 | 2.21 |
| 59.0 | 15.0 | "Overlords" | Steward Lee | Christian Taylor | January28,2011 | 3.09 | 1.74 |
| 60.0 | 16.0 | "Altar of Mortis" | Brian Kalin O'Connell | Christian Taylor | February4,2011 | 3.11 | 2.29 |
| 61.0 | 17.0 | "Ghosts of Mortis" | Steward Lee | Christian Taylor | February11,2011 | 3.13 | 2.24 |
| 62.0 | 18.0 | "The Citadel" | Kyle Dunlevy | Matt Michnovetz | February18,2011 | 3.14 | 1.84 |
| 63.0 | 19.0 | "Counter Attack" | Brian Kalin O'Connell | Matt Michnovetz | March4,2011 | 3.15 | 1.87 |
| 64.0 | 20.0 | "Citadel Rescue" | Steward Lee | Matt Michnovetz | March11,2011 | 3.17 | 1.55 |
| 65.0 | 21.0 | "Padawan Lost" | Dave Filoni | Bonnie Mark | March19,2011 (UK) April1,2011 (USA) | 3.16 | 2.31 |
Question:
Name the production code for viewers for 1.69
Answer:
2.24