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 | Hyde United | 1–2 | Vauxhall Motors | 97 |
| 2 | Droylsden | 1–2 | Gateshead | 190 |
| 3 | Stalybridge Celtic | 1–4 | Southport | 231 |
| 4 | Harrogate Town | 1–1 | Fleetwood Town | 174 |
| Fleetwood won 5–4 on penalties | Fleetwood won 5–4 on penalties | Fleetwood won 5–4 on penalties | Fleetwood won 5–4 on penalties | Fleetwood won 5–4 on penalties |
| 5 | Farsley Celtic | 3–1 | Workington | 101 |
| 6 | Burscough | 1–4 | Blyth Spartans | 160 |
| 7 | Hucknall Town | 1–3 | Hinckley United | 192 |
| 8 | A.F.C. Telford United | 3–2 | Gainsborough Trinity | 652 |
| 9 | Redditch United | 0–1 | Solihull Moors | 157 |
| 10 | Alfreton Town | 2–3 | Stafford Rangers | 201 |
| 11 | King's Lynn | 1–2 | Tamworth | 510 |
Question:
What is the tie no that has southport as the away team?
Answer:
3.0