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 # | Episode # | Title | Directed by | Written by | Original air date | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- |
| 27.0 | 1.0 | "The Captain" | Clark Mathis | Eric Falconer | September21,2011 | 0.891 |
| 28.0 | 2.0 | "Dic Pics" | John Fortenberry | JD Ryznar | September21,2011 | N/A |
| 29.0 | 3.0 | "Thad's Back" | Clark Mathis | Heather Flanders | September28,2011 | 0.884 |
| 30.0 | 4.0 | "The Peak" | Jay Chandrasekhar | Drew Hancock | October5,2011 | 0.871 |
| 31.0 | 5.0 | "Training Day" | Eric Appel | Heather Flanders | October12,2011 | 0.852 |
| 32.0 | 6.0 | "Blackout" | John Fortenberry | Kristofor Brown | October19,2011 | 0.645 |
| 33.0 | 7.0 | "Superstition" | Jay Chandrasekhar | Kristofor Brown | October26,2011 | 0.884 |
| 34.0 | 8.0 | "Fun Facts" | Eric Appel | J.D. Ryznar | November2,2011 | 0.944 |
| 35.0 | 9.0 | "The C-Word" | Dean Holland | Chris Romano | November5,2011 | N/A |
| 36.0 | 10.0 | "One Week" | Dean Holland | Ryan Ridley | November9,2011 | N/A |
Question:
Which series # had 0.645 U.S. viewers(millions)?
Answer:
32.0