What The average Attendance when Date is 1 October 1998 one,?
Date Round Opponent Venue Result Attendance
1998–99 Chelsea F.C. season
16924792
text text text text text real
2-16924792-2
UEFA Cup Winners' Cup
UEFA Cup Winners' Cup
17 September 1998 R1 Helsingborg H 1-0 17,714
1 October 1998 R1 Helsingborg A 0-0 12,348
22 October 1998 R2 Copenhagen H 1-1 21,207
5 November 1998 R2 Copenhagen A 1-0 24,188
4 March 1999 QF Vålerenga H 3-0 34,177
18 March 1999 QF Vålerenga A 3-2 17,936
8 April 1999 SF Mallorca H 1-1 35524
22 April 1999 SF Mallorca A 0-1 18,848
SELECT AVG Attendance FROM table WHERE Date = 1 october 1998
1 october 1998