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 | Director | Writer(s) | Airdate |
| --- | --- | --- | --- | --- | --- |
| 410.0 | 1.0 | " Snap Decision " | Mark Rydell Category:Articles with hCards | Dick Carr Category:Articles with hCards | September 17, 1966 |
| 411.0 | 2.0 | " The Goldtakers " | Vincent McEveety Category:Articles with hCards | Clyde Ware Category:Articles with hCards | September 24, 1966 |
| 412.0 | 3.0 | " The Jailer " | Vincent McEveety Category:Articles with hCards | Hal Sitowitz Category:Articles with hCards | October 1, 1966 |
| 413.0 | 4.0 | " The Mission " | Mark Rydell Category:Articles with hCards | Richard Carr Category:Articles with hCards | October 8, 1966 |
| 414.0 | 5.0 | " The Good People " | Robert Totten Category:Articles with hCards | James Landis Category:Articles with hCards | October 15, 1966 |
| 415.0 | 6.0 | " Gunfighter, R.I.P. " | Mark Rydell Category:Articles with hCards | Michael Fisher Category:Articles with hCards | October 22, 1966 |
| 416.0 | 7.0 | " The Wrong Man " | Robert Totten Category:Articles with hCards | Robert Lewin Category:Articles with hCards | October 29, 1966 |
| 417.0 | 8.0 | " The Whispering Tree " | Vincent McEveety Category:Articles with hCards | Calvin Clements, Sr. Category:Articles with hCards | November 12, 1966 |
| 418.0 | 9.0 | " The Well " | Marc Daniels Category:Articles with hCards | Francis Cockrell Category:Articles with hCards | November 19, 1966 |
| 419.0 | 10.0 | " Stage Stop " | Irving J. Moore Category:Articles with hCards | Hal Sitowitz Category:Articles with hCards | November 26, 1966 |
| 420.0 | 11.0 | " The Newcomers " | Robert Totten Category:Articles with hCards | Calvin Clements, Sr. Category:Articles with hCards | December 3, 1966 |
| 421.0 | 12.0 | " Quaker Girl " | Bernard L. Kowalski Category:Articles with hCards | Preston Wood Category:Articles with hCards | December 10, 1966 |
| 422.0 | 13.0 | " The Moonstone " | Richard Colla Category:Articles with hCards | Paul Savage Category:Articles with hCards | December 17, 1966 |
| 423.0 | 14.0 | " Champion of the World " | Marc Daniels Category:Articles with hCards | Les Crutchfield Category:Articles with hCards | December 24, 1966 |
| 424.0 | 15.0 | " The Hanging " | Bernard L. Kowalski Category:Articles with hCards | Calvin Clements, Jr. Category:Articles with hCards | December 31, 1966 |
| 425.0 | 16.0 | " Saturday Night " | Robert Totten Category:Articles with hCards | Clyde Ware Category:Articles with hCards | January 7, 1967 |
| 426.0 | 17.0 | " Mad Dog " | Charles R. Rondeau Category:Articles with hCards | Jay Simms Category:Articles with hCards | January 14, 1967 |
| 427.0 | 18.0 | " Muley " | Allen Reisner Category:Articles with hCards | Les Crutchfield Category:Articles with hCards | January 21, 1967 |
| 428.0 | 19.0 | " Mail Drop " | Robert Totten Category:Articles with hCards | Calvin Clements, Sr. Category:Articles with hCards | January 28, 1967 |
| 429.0 | 20.0 | " Old Friend " | Allen Reisner Category:Articles with hCards | Clyde Ware Category:Articles with hCards | February 4, 1967 |
| 430.0 | 21.0 | " Fandango " | James Landis Category:Articles with hCards | Don Ingalls Category:Articles with hCards | February 11, 1967 |
| 431.0 | 22.0 | " The Returning " | Marc Daniels Category:Articles with hCards | James Landis Category:Articles with hCards | February 18, 1967 |
| 432.0 | 23.0 | " The Lure " | Marc Daniels Category:Articles with hCards | Clyde Ware Category:Articles with hCards | February 25, 1967 |
| 433.0 | 24.0 | " Noose of Gold " | Irving J. Moore Category:Articles with hCards | Preston Wood Category:Articles with hCards | March 4, 1967 |
| 434.0 | 25.0 | " The Favor " | Marc Daniels Category:Articles with hCards | Don Ingalls Category:Articles with hCards | March 11, 1967 |
| 436.0 | 27.0 | " Ladies from St. Louis " | Irving J. Moore Category:Articles with hCards | Clyde Ware Category:Articles with hCards | March 25, 1967 |
| 437.0 | 28.0 | " Nitro! " – Part 1 | Robert Totten Category:Articles with hCards | Preston Wood Category:Articles with hCards | April 8, 1967 |
Question:
How many directors were there for series # 431?
Answer:
1.0