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 | U.S. viewers (million) | Original air date |
| --- | --- | --- | --- | --- | --- | --- |
| 15.0 | 1.0 | "Withdrawal" | Tim Matheson | Jeff Eastin | 4.29 | July13,2010 |
| 16.0 | 2.0 | "Need to Know" | Sanford Bookstaver | Joe Henderson | 3.96 | July20,2010 |
| 17.0 | 3.0 | "Copycat Caffrey" | Paul Holahan | Channing Powell | 3.72 | July27,2010 |
| 18.0 | 4.0 | "By the Book" | Michael Smith | Alexandra McNally | 4.10 | August3,2010 |
| 19.0 | 5.0 | "Unfinished Business" | Tricia Brock | Jeff Eastin | 4.00 | August10,2010 |
| 20.0 | 6.0 | "In the Red" | David Straiton | Matt Negrete | 4.48 | August17,2010 |
| 21.0 | 7.0 | "Prisoner's Dilemma" | Vincent Misiano | Mark Goffman | 4.60 | August24,2010 |
| 22.0 | 8.0 | "Company Man" | Rosemary Rodriguez | Jim Campolongo | 4.44 | August31,2010 |
| 23.0 | 9.0 | "Point Blank" | Kevin Bray | Jeff Eastin | 4.72 | September7,2010 |
| 24.0 | 10.0 | "Burke's Seven" | Michael Smith | Joe Henderson | 3.81 | January18,2011 |
| 25.0 | 11.0 | "Forging Bonds" | John T. Kretchmer | Jeff Eastin & Alexandra McNally | 3.90 | January25,2011 |
| 26.0 | 12.0 | "What Happens in Burma..." | John T. Kretchmer | Hy Conrad | 3.46 | February1,2011 |
| 27.0 | 13.0 | "Countermeasures" | Michael Smith | Jim Campolongo | 3.46 | February8,2011 |
| 28.0 | 14.0 | "Payback" | Russell Lee Fine | Mark Goffman | 3.27 | February22,2011 |
| 29.0 | 15.0 | "Power Play" | Jeff F. King | Mark Goffman | 3.30 | March1,2011 |
Question:
How many episodes in the season had 3.81 million US viewers?
Answer:
1.0