Table:
0
A
B
C
D
E
1
Week
Date
Opponent
Result
Attendance
2
1
September 2, 1979
Miami Dolphins
L 9–7
69,441
3
2
September 9, 1979
Cincinnati Bengals
W 51–24
43,504
4
3
September 16, 1979
at San Diego Chargers
L 27–19
50,709
5
4
September 23, 1979
New York Jets
W 46–31
68,731
6
5
September 30, 1979
at Baltimore Colts
W 31–13
31,904
7
6
October 7, 1979
Chicago Bears
L 7–0
73,383
8
7
October 14, 1979
at Miami Dolphins
L 17–7
45,597
9
8
October 21, 1979
Baltimore Colts
L 14–13
50,581
10
9
October 28, 1979
at Detroit Lions
W 20–17
61,911
11
10
November 4, 1979
New England Patriots
L 26–6
67,935
12
11
November 11, 1979
at New York Jets
W 14–12
50,647
13
12
November 18, 1979
Green Bay Packers
W 19–12
39,679
14
13
November 25, 1979
at New England Patriots
W 16–13
60,991
15
14
December 2, 1979
Denver Broncos
L 19–16
37,886
16
15
December 9, 1979
at Minnesota Vikings
L 10–3
42,239
17
16
December 16, 1979
at Pittsburgh Steelers
L 28–0
48,002

Questions and formulas:
Question: What is the attendance before week 1?
Formula: SUM(FILTER(E1, A1<1))
Formula2: SUM(FILTER(E2:E17, A2:A17<1))
Level: easy