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 # | Season # | Title | Directed by | Written by | Original air date |
| --- | --- | --- | --- | --- | --- |
| 246.0 | 1.0 | "Cañon City" | Christopher Chulack | Lisa Zwerling , John Wells and Joe Sachs | September22,2005 |
| 247.0 | 2.0 | "Nobody's Baby" | Laura Innes | R. Scott Gemmill | September29,2005 |
| 248.0 | 3.0 | "Man With No Name" | Christopher Chulack | David Zabel | October6,2005 |
| 249.0 | 4.0 | "Blame It On The Rain" | Paul McCrane | R. Scott Gemmill | October13,2005 |
| 250.0 | 5.0 | "Wake Up" | Arthur Albert | Janine Sherman Barrois | October20,2005 |
| 251.0 | 6.0 | "Dream House" | Stephen Cragg | David Zabel | November3,2005 |
| 252.0 | 7.0 | "The Human Shield" | Laura Innes | R. Scott Gemmill | November10,2005 |
| 253.0 | 8.0 | "Two Ships" | Christopher Chulack | Joe Sachs and Virgil Williams | November17,2005 |
| 254.0 | 9.0 | "I Do" | Gloria Muzio | Lydia Woodward | December1,2005 |
| 255.0 | 10.0 | "All About Christmas Eve" | Lesli Linka Glatter | Janine Sherman Barrois | December8,2005 |
| 256.0 | 11.0 | "If Not Now" | John Gallagher | David Zabel | January5,2006 |
| 257.0 | 12.0 | "Split Decisions" | Richard Thorpe | R. Scott Gemmill | January12,2006 |
| 258.0 | 13.0 | "Body and Soul" | Paul McCrane | Joe Sachs | February2,2006 |
| 259.0 | 14.0 | "Quintessence of Dust" | Joanna Kerns | Lisa Zwerling and David Zabel | February9,2006 |
| 260.0 | 15.0 | "Darfur" | Richard Thorpe | Janine Sherman Barrois | March2,2006 |
| 261.0 | 16.0 | "Out on a Limb" | Lesli Linka Glatter | Karen Maser | March16,2006 |
| 262.0 | 17.0 | "Lost In America" | Stephen Cragg | Lisa Zwerling | March23,2006 |
| 263.0 | 18.0 | " Strange Bedfellows " | Laura Innes | Virgil Williams | March30,2006 |
| 264.0 | 19.0 | " No Place to Hide " | Skipp Sudduth | Lydia Woodward | April27,2006 |
| 265.0 | 20.0 | " There Are No Angels Here " | Christopher Chulack | R. Scott Gemmill and David Zabel | May4,2006 |
| 266.0 | 21.0 | " The Gallant Hero and The Tragic Victor " | Steve Shill | R. Scott Gemmill | May11,2006 |
Question:
What was the number of seasons that was directed by Joanna Kerns?
Answer:
1.0