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:
| Team | Outgoing manager | Manner of departure | Date of vacancy | Incoming manager | Date of appointment | Position in Table |
| --- | --- | --- | --- | --- | --- | --- |
| Hereford United | Graham Turner | Resigned | 16 April 2010 | Simon Davey | 22 June 2010 | Pre-Season |
| Barnet | Ian Hendon | Sacked | 28 April 2010 | Mark Stimson | 1 June 2010 | Pre-Season |
| Shrewsbury Town | Paul Simpson | Sacked | 30 April 2010 | Graham Turner | 11 June 2010 | Pre-Season |
| Gillingham | Mark Stimson | Mutual consent | 10 May 2010 | Andy Hessenthaler | 22 May 2010 | Pre-Season |
| Stockport | Gary Ablett | Sacked | 17 June 2010 | Paul Simpson | 12 July 2010 | Pre-Season |
| Lincoln City | Chris Sutton | Resigned | 29 September 2010 | Steve Tilson | 15 October 2010 | 21st |
| Hereford United | Simon Davey | Sacked | 4 October 2010 | Jamie Pitman | 19 December 2010 | 24th |
| Port Vale | Micky Adams | Signed by Sheffield United | 30 December 2010 | Jim Gannon | 6 January 2011 | 2nd |
| Barnet | Mark Stimson | Sacked | 1 January 2011 | Martin Allen | 23 March 2011 | 23rd |
| Stockport County | Paul Simpson | Sacked | 4 January 2011 | Ray Mathias | 9 March 2011 | 21st |
| Aldershot Town | Kevin Dillon | Sacked | 10 January 2011 | Dean Holdsworth | 12 January 2011 | 20th |
| Bradford City | Peter Taylor | Stepped down | 26 February 2011 | Peter Jackson | 28 February 2011 | 20th |
| Northampton Town | Ian Sampson | Sacked | 2 March 2011 | Gary Johnson | 4 March 2011 | 16th |
| Port Vale | Jim Gannon | Sacked | 21 March 2011 | Micky Adams | 13 May 2011 | 8th |
| Rotherham United | Ronnie Moore | Mutual consent | 22 March 2011 | Andy Scott | 13 April 2011 | 9th |
| Bury | Alan Knill | Signed by Scunthorpe United | 31 March 2011 | Richard Barker (caretaker) | 31 March 2011 | 4th |
Question:
What is the position in table when the date of vacancy was 4 january 2011?
Answer:
21st