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) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 101 | 1 | " Gossip " | Paul Lieberstein | Paul Lieberstein | September17,2009 | 6001 | 8.20 |
| 102 | 2 | " The Meeting " | Randall Einhorn | Aaron Shure | September24,2009 | 6002 | 7.33 |
| 103 | 3 | " The Promotion " | Jennifer Celotta | Jennifer Celotta | October1,2009 | 6003 | 7.28 |
| 104/105 | 4/5 | " Niagara "‡ | Paul Feig | Greg Daniels & Mindy Kaling | October8,2009 | 6004/6005 | 9.42 |
| 106 | 6 | " Mafia " | David Rogers | Brent Forrester | October15,2009 | 6006 | 8.10 |
| 107 | 7 | " The Lover " | Lee Eisenberg | Lee Eisenberg & Gene Stupnitsky | October22,2009 | 6007 | 8.52 |
| 108 | 8 | " Koi Pond " | Reggie Hudlin | Warren Lieberstein & Halsted Sullivan | October29,2009 | 6009 | 8.20 |
| 109 | 9 | " Double Date " | Seth Gordon | Charlie Grandy | November5,2009 | 6008 | 7.94 |
| 110 | 10 | " Murder " | Greg Daniels | Daniel Chun | November12,2009 | 6010 | 7.76 |
| 111 | 11 | " Shareholder Meeting " | Charles McDougall | Justin Spitzer | November19,2009 | 6011 | 7.43 |
| 112 | 12 | " Scott's Tots " | B. J. Novak | Gene Stupnitsky & Lee Eisenberg | December3,2009 | 6013 | 8.10 |
| 113 | 13 | " Secret Santa " | Randall Einhorn | Mindy Kaling | December10,2009 | 6014 | 8.51 |
| 114 | 14 | " The Banker " | Jeffrey Blitz | Jason Kessler | January21,2010 | 6012 | 7.29 |
| 115 | 15 | " Sabre " | John Krasinski | Jennifer Celotta | February4,2010 | 6015 | 7.36 |
| 116 | 16 | " The Manager and the Salesman " | Marc Webb | Mindy Kaling | February11,2010 | 6016 | 7.40 |
| 117/118 | 17/18 | " The Delivery "‡ | Seth Gordon (Part 1) Harold Ramis (Part 2) | Daniel Chun (Part 1) Charlie Grandy (Part 2) | March4,2010 | 6018/6019 | 9.00 |
| 119 | 19 | " St. Patrick's Day " | Randall Einhorn | Jonathan Hughes | March11,2010 | 6017 | 7.51 |
| 120 | 20 | " New Leads " | Brent Forrester | Brent Forrester | March18,2010 | 6020 | 7.63 |
| 121 | 21 | " Happy Hour " | Matt Sohn | B. J. Novak | March25,2010 | 6021 | 7.17 |
| 122 | 22 | " Secretary's Day " | Steve Carell | Mindy Kaling | April22,2010 | 6022 | 6.30 |
| 123 | 23 | " Body Language " | Mindy Kaling | Justin Spitzer | April29,2010 | 6023 | 7.01 |
| 124 | 24 | " The Cover-Up " | Rainn Wilson | Gene Stupnitsky & Lee Eisenberg | May6,2010 | 6024 | 6.84 |
| 125 | 25 | " The Chump " | Randall Einhorn | Aaron Shure | May13,2010 | 6025 | 6.60 |
Question:
Name the production code for number in season being 21
Answer:
6021.0