[Table] header: Tie no | Home team | Score | Away team | Date row 1 : 1 | Darlington | 0–4 | Wolverhampton Wanderers | 14 January 1998
row 2 : 2 | Bournemouth | 0–1 | Huddersfield Town | 13 January 1998
row 3 : 3 | Liverpool | 1–3 | Coventry City | 3 January 1998
row 4 : 4 | Preston North End | 1–2 | Stockport County | 3 January 1998
row 5 : 5 | Watford | 1–1 | Sheffield Wednesday | 3 January 1998
row 6 : Replay | Sheffield Wednesday | 0–0 | Watford | 14 January 1998
row 7 : Sheffield Wednesday won 5–3 on penalties | Sheffield Wednesday won 5–3 on penalties | Sheffield Wednesday won 5–3 on penalties | Sheffield Wednesday won 5–3 on penalties | Sheffield Wednesday won 5–3 on penalties
row 8 : 6 | Leicester City | 4–0 | Northampton Town | 3 January 1998
row 9 : 7 | Blackburn Rovers | 4–2 | Wigan Athletic | 3 January 1998
row 10 : 8 | Grimsby Town | 3–0 | Norwich City | 3 January 1998
row 11 : 9 | Crewe Alexandra | 1–2 | Birmingham City | 3 January 1998
row 12 : 10 | West Bromwich Albion | 3–1 | Stoke City | 13 January 1998
row 13 : 11 | Derby County | 2–0 | Southampton | 3 January 1998
row 14 : 12 | Everton | 0–1 | Newcastle United | 4 January 1998
row 15 : 13 | Swindon Town | 1–2 | Stevenage Borough | 3 January 1998
row 16 : 14 | Sheffield United | 1–1 | Bury | 3 January 1998
row 17 : Replay | Bury | 1–2 | Sheffield United | 13 January 1998
row 18 : 15 | Tottenham Hotspur | 3–1 | Fulham | 5 January 1998
row 19 : 16 | Manchester City | 2–0 | Bradford City | 3 January 1998
row 20 : 17 | Queens Park Rangers | 2–2 | Middlesbrough | 3 January 1998
row 21 : Replay | Middlesbrough | 2–0 | Queens Park Rangers | 13 January 1998
row 22 : 18 | Barnsley | 1–0 | Bolton Wanderers | 3 January 1998
row 23 : 19 | Bristol Rovers | 1–1 | Ipswich Town | 3 January 1998
row 24 : Replay | Ipswich Town | 1–0 | Bristol Rovers | 13 January 1998
row 25 : 20 | Portsmouth | 2–2 | Aston Villa | 3 January 1998
row 26 : Replay | Aston Villa | 1–0 | Portsmouth | 14 January 1998
row 27 : 21 | West Ham United | 2–1 | Emley | 3 January 1998
row 28 : 22 | Crystal Palace | 2–0 | Scunthorpe United | 3 January 1998
row 29 : 23 | Chelsea | 3–5 | Manchester United | 4 January 1998
row 30 : 24 | Wimbledon | 0–0 | Wrexham | 4 January 1998
row 31 : Replay | Wrexham | 2–3 | Wimbledon | 13 January 1998
row 32 : 25 | Cardiff City | 1–0 | Oldham Athletic | 3 January 1998
row 33 : 26 | Charlton Athletic | 4–1 | Nottingham Forest | 3 January 1998
row 34 : 27 | Arsenal | 0–0 | Port Vale | 3 January 1998
row 35 : Replay | Port Vale | 1–1 | Arsenal | 14 January 1998
row 36 : Arsenal won 4–3 on penalties | Arsenal won 4–3 on penalties | Arsenal won 4–3 on penalties | Arsenal won 4–3 on penalties | Arsenal won 4–3 on penalties
row 37 : 28 | Cheltenham Town | 1–1 | Reading | 13 January 1998
row 38 : Replay | Reading | 2–1 | Cheltenham Town | 20 January 1998
row 39 : 29 | Leeds United | 4–0 | Oxford United | 3 January 1998
row 40 : 30 | Hereford United | 0–3 | Tranmere Rovers | 13 January 1998
row 41 : 31 | Rotherham United | 1–5 | Sunderland | 3 January 1998
row 42 : 32 | Peterborough United | 0–2 | Walsall | 13 January 1998 [/Table] Answer this question based on the above table: what is the tie number that has Portsmouth Home team

Answer: 20.0