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) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 89.0 | 1.0 | "Revival" | Steward Lee | Chris Collins | September29,2012 | 4.26 | 1.94 |
| 90.0 | 2.0 | "A War on Two Fronts" | Dave Filoni | Chris Collins | October6,2012 | 4.15 | 1.71 |
| 91.0 | 3.0 | "Front Runners" | Steward Lee | Chris Collins | October13,2012 | 4.16 | 1.75 |
| 92.0 | 4.0 | "The Soft War" | Kyle Dunlevy | Chris Collins | October20,2012 | 4.17 | 1.57 |
| 93.0 | 5.0 | "Tipping Points" | Bosco Ng | Chris Collins | October27,2012 | 4.18 | 1.42 |
| 94.0 | 6.0 | " The Gathering " | Kyle Dunlevy | Christian Taylor | November3,2012 | 4.22 | 1.66 |
| 95.0 | 7.0 | "A Test of Strength" | Bosco Ng | Christian Taylor | November10,2012 | 4.23 | 1.74 |
| 96.0 | 8.0 | "Bound for Rescue" | Brian Kalin O'Connell | Christian Taylor | November17,2012 | 4.24 | 1.96 |
| 97.0 | 9.0 | "A Necessary Bond" | Danny Keller | Christian Taylor | November24,2012 | 4.25 | 1.39 |
| 98.0 | 10.0 | "Secret Weapons" | Danny Keller | Brent Friedman | December1,2012 | 5.04 | 1.46 |
| 99.0 | 11.0 | "A Sunny Day in the Void" | Kyle Dunlevy | Brent Friedman | December8,2012 | 5.05 | 1.43 |
| 100.0 | 12.0 | "Missing in Action" | Steward Lee | Brent Friedman | January5,2013 | 5.06 | 1.74 |
| 101.0 | 13.0 | "Point of No Return" | Bosco Ng | Brent Friedman | January12,2013 | 5.07 | 1.47 |
| 102.0 | 14.0 | "Eminence" | Kyle Dunlevy | Chris Collins | January19,2013 | 5.01 | 1.85 |
| 103.0 | 15.0 | "Shades of Reason" | Bosco Ng | Chris Collins | January26,2013 | 5.02 | 1.83 |
| 104.0 | 16.0 | "The Lawless" | Brian Kalin O'Connell | Chris Collins | February2,2013 | 5.03 | 1.86 |
| 105.0 | 17.0 | "Sabotage" | Brian Kalin O'Connell | Charles Murray | February9,2013 | 5.08 | 2.02 |
| 106.0 | 18.0 | "The Jedi Who Knew Too Much" | Danny Keller | Charles Murray | February16,2013 | 5.09 | 1.64 |
| 107.0 | 19.0 | "To Catch a Jedi" | Kyle Dunlevy | Charles Murray | February23,2013 | 5.10 | 2.06 |
Question:
How many u.s. viewers  (million) have the production code of 5.09?
Answer:
1.64