Table:
0
A
B
C
D
E
F
G
H
I
1
Institution
Team
City
Province
First season
Head coach
Enrollment
Football stadium
Capacity
2
University of Windsor
Lancers
Windsor
ON
1968
Joe D'Amore
13,496
South Campus Stadium
2,000
3
University of Western Ontario
Mustangs
London
ON
1929
Greg Marshall
30,000
TD Waterhouse Stadium
10,000
4
University of Waterloo
Warriors
Waterloo
ON
1957
Joe Paopao
27,978
Warrior Field
5,200
5
Wilfrid Laurier University
Golden Hawks
Waterloo
ON
1961
Michael Faulds
12,394
University Stadium
6,000
6
University of Guelph
Gryphons
Guelph
ON
1950
Stu Lang
19,408
Alumni Stadium
4,100
7
McMaster University
Marauders
Hamilton
ON
1901
Stefan Ptaszek
25,688
Ron Joyce Stadium
6,000
8
University of Toronto
Varsity Blues
Toronto
ON
1877
Greg Gary
73,185
Varsity Stadium
5,000
9
York University
Lions
Toronto
ON
1969
Warren Craney
42,400
York Stadium
2,500
10
Queen's University
Golden Gaels
Kingston
ON
1882
Pat Sheahan
20,566
Richardson Stadium
10,258
11
University of Ottawa
Gee-Gees
Ottawa
ON
1894
Jamie Barresi
35,548
Gee-Gees Field
4,152
12
Carleton University
Ravens
Ottawa
ON
1945
Steve Sumarah
25,890
Keith Harris Stadium
3,000

Questions and formulas:
Question: What is the average capacity of stadiums in the City of London that belong to schools with an enrollment less than 30,000?
Formula: AVERAGE(FILTER(I1, (C1="london")*(G1<30000)))
Formula2: AVERAGE(FILTER(I2:I12, (C2:C12="london")*(G2:G12<30000)))
Level: easy