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:
| Tie no | Home team | Score | Away team | Attendance |
| --- | --- | --- | --- | --- |
| 1 | Oxford United | 0 – 0 | Southend United | 5163.0 |
| replay | Southend United | 3 – 0 | Oxford United | 2740.0 |
| 2 | Swindon Town | 3 – 2 | Forest Green Rovers | 7588.0 |
| 3 | Oldham Athletic | 1 – 0 | Crewe Alexandra | 3900.0 |
| 4 | Northampton Town | 1 – 1 | Walsall | 3887.0 |
| replay | Walsall | 1 – 0 | Northampton Town | 3066.0 |
| 5 | Cambridge United | 1 – 0 | Weymouth | 4552.0 |
| 6 | Millwall | 2 – 1 | Bournemouth | 4495.0 |
| 7 | Staines Town | 0 – 5 | Peterborough United | 2460.0 |
| 8 | Bradford City | 0 – 3 | Tranmere Rovers | 6379.0 |
| 9 | Torquay United | 0 – 2 | Brighton & Hove Albion | 4010.0 |
| 10 | Notts County | 0 – 1 | Havant & Waterlooville | 3810.0 |
| 11 | Dagenham & Redbridge | 3 – 1 | Kidderminster Harriers | 1493.0 |
| 12 | Port Vale | 1 – 1 | Chasetown | 5875.0 |
| replay | Chasetown | 1 – 0 | Port Vale | 1986.0 |
| 13 | Bristol Rovers | 5 – 1 | Rushden & Diamonds | 4816.0 |
| 14 | Huddersfield Town | 3 – 0 | Grimsby Town | 6729.0 |
| 15 | Burton Albion | 1 – 1 | Barnet | 2769.0 |
| replay | Barnet | 1 – 0 | Burton Albion | 1379.0 |
| 16 | Bury | 1 – 0 | Exeter City | 2725.0 |
| 17 | Luton Town | 1 – 0 | Nottingham Forest | 5758.0 |
| 18 | Horsham | 1 – 1 | Swansea City | 2731.0 |
| replay | Swansea City | 6 – 2 | Horsham | 5911.0 |
| 19 | Hereford United | 2 – 0 | Hartlepool United | 3801.0 |
| 20 | Harrogate Railway Athletic | 2 – 3 | Mansfield Town | 1486.0 |
Question:
What is the average attendance when the Forest Green Rovers is the away team?
Answer:
7588.0