Table:
0
A
B
C
D
E
F
G
1
Month/Year
Day Sorties (losses)
Night Sorties (Losses)
Luftflotte 2 sorties
Luftflotte 3 sorties
Major attacks
Heavy attacks
2
October 1940
2,300 (79)
5,900 (23)
2,400
3,500
25
4
3
November 1940
925 (65)
6,125 (48)
1,600
4,525
23
2
4
December 1940
650 (24)
3,450 (44)
700
2,750
11
5
5
January 1941
675 (7)
2,050 (22)
450
1,600
7
6
6
February 1941
500 (9)
1,450 (18)
475
975
–
2
7
March 1941
800 (8)
4,275 (46)
1,625
2,650
12
3
8
April 1941
800 (9)
5,250 (58)
1,500
3,750
16
5
9
May 1941
200 (3)
3,800 (55)
1,300
2,500
11
3

Questions and formulas:
Question: How many heavy attacks did the 450 Luftflotte 2 conduct?
Formula: SUM(FILTER(G1, D1=450))
Formula2: SUM(FILTER(G2:G9, D2:D9=450))
Level: easy