Table:
text: 1999–2000 Sheffield Wednesday F.C. season
FA Premier League
FA Premier League
Date_ Opponent Venue Result_ Attendance
6 November 1999 Watford H 2-2 21658
21 November 1999 West Ham United A 3-4 23015
5 December 1999 Liverpool A 1-4 42517
18 December 1999 Aston Villa A 1-2 23885
26 December 1999 Middlesbrough H 1-0 28531
29 December 1999 Chelsea A 0-3 32938
3 January 2000 Arsenal H 1-1 26155
15 January 2000 Bradford City H 2-0 24682
22 January 2000 Tottenham Hotspur A 1-0 35897
2 February 2000 Manchester United H 0-1 39640
5 February 2000 Derby County A 3-3 30100
12 February 2000 Southampton H 0-1 23470
26 February 2000 Newcastle United H 0-2 29212
4 March 2000 Everton A 1-1 32020

text: 1999–2000 Sheffield Wednesday F.C. season
FA Premier League
FA Premier League
Date_ Opponent Venue Result_ Attendance
7 August 1999 Liverpool H 1-2 34853
11 August 1999 Manchester United A 0-4 54941
14 August 1999 Bradford City A 1-1 18276
21 August 1999 Tottenham Hotspur H 1-2 24027
25 August 1999 Derby County H 0-2 20943
28 August 1999 Southampton A 0-2 14815
11 September 1999 Everton H 0-2 23539
19 September 1999 Newcastle United A 0-8 36619
25 September 1999 Sunderland A 0-1 41132
2 October 1999 Wimbledon H 5-1 18077
16 October 1999 Leeds United A 0-2 39437
23 October 1999 Coventry City H 0-0 23296
30 October 1999 Leicester City A 0-3 19046

text: 1999–2000 Sheffield Wednesday F.C. season
FA Premier League
FA Premier League
Date_ Opponent Venue Result_ Attendance
11 March 2000 West Ham United H 3-1 21147
18 March 2000 Watford A 0-1 15840
25 March 2000 Middlesbrough A 0-1 32748
5 April 2000 Aston Villa H 0-1 18136
12 April 2000 Wimbledon A 2-0 8248
15 April 2000 Chelsea H 1-0 21743
22 April 2000 Sunderland H 0-2 28072
30 April 2000 Leeds United H 0-3 23416
6 May 2000 Coventry City A 1-4 19921
9 May 2000 Arsenal A 3-3 37271
14 May 2000 Leicester City H 4-0 21656

Question: What is the highest attendance for the game against West Ham United at the venue of a Sheffield Wednesday FC season 1999-2000?