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) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 135.0 | 1.0 | "A Call to Arms" | James L. Conway | Brad Kern | September12,2004 | 4301135.0 | 5.5 |
| 136.0 | 2.0 | "The Bare Witch Project" | John T. Kretchmer | Jeannine Renshaw | September19,2004 | 4301136.0 | 4.8 |
| 137.0 | 3.0 | "Cheaper by the Coven" | Derek Johansen | Mark Wilding | September26,2004 | 4301137.0 | 5.3 |
| 138.0 | 4.0 | "Charrrmed!" | Mel Damski | Cameron Litvack | October3,2004 | 4301138.0 | 4.7 |
| 139.0 | 5.0 | "Styx Feet Under" | Christopher Leitch | Henry Alonso Myers | October10,2004 | 4301139.0 | 4.8 |
| 140.0 | 6.0 | "Once in a Blue Moon" | John T. Kretchmer | Debra J. Fisher & Erica Messer | October17,2004 | 4301140.0 | 4.6 |
| 141.0 | 7.0 | "Someone to Witch Over Me" | Jon Paré | Rob Wright | October31,2004 | 4301141.0 | 3.9 |
| 142.0 | 8.0 | "Charmed Noir" | Michael Grossman | Curtis Kheel | November14,2004 | 4301142.0 | 3.9 |
| 143.0 | 9.0 | "There's Something About Leo" | Derek Johansen | Natalie Antoci & Scott Lipsey | November21,2004 | 4301143.0 | 3.9 |
| 144.0 | 10.0 | "Witchness Protection" | David Jackson | Jeannine Renshaw | November28,2004 | 4301144.0 | 4.1 |
| 145.0 | 11.0 | "Ordinary Witches" | Jonathan West | Mark Wilding | January16,2005 | 4301145.0 | 3.5 |
| 146.0 | 12.0 | "Extreme Makeover: World Edition" | LeVar Burton | Cameron Litvack | January23,2005 | 4301146.0 | 3.5 |
| 147.0 | 13.0 | "Charmageddon" | John T. Kretchmer | Henry Alonso Myers | January30,2005 | 4301147.0 | 3.9 |
| 148.0 | 14.0 | "Carpe Demon" | Stuart Gillard | Curtis Kheel | February13,2005 | 4301148.0 | 2.9 |
| 149.0 | 15.0 | "Show Ghouls" | Mel Damski | Rob Wright & Debra J. Fisher & Erica Messer | February20,2005 | 4301149.0 | 3.2 |
| 150.0 | 16.0 | "The Seven Year Witch" | Michael Grossman | Jeannine Renshaw | April10,2005 | 4301150.0 | 3.9 |
| 151.0 | 17.0 | "Scry Hard" | Derek Johansen | Andy Reaser & Doug E. Jones | April17,2005 | 4301151.0 | 3.4 |
| 152.0 | 18.0 | "Little Box of Horrors" | Jon Paré | Cameron Litvack | April24,2005 | 4301152.0 | 3.9 |
| 153.0 | 19.0 | "Freaky Phoebe" | Michael Grossman | Mark Wilding | May1,2005 | 4301153.0 | 3.6 |
| 154.0 | 20.0 | "Imaginary Fiends" | Jonathan West | Henry Alonso Myers | May8,2005 | 4301154.0 | 3.3 |
| 155.0 | 21.0 | "Death Becomes Them" | John T. Kretchmer | Curtis Kheel | May15,2005 | 4301155.0 | 3.4 |
Question:
when the writer is Brad Kern, how many u.s viewers (in millions) had the episode?
Answer:
5.5