Table:
0
A
B
C
D
E
F
G
1
Perpetrator
Date
Year
Location
Country
Killed
Injured
2
Grachev, Peter
07.31 July 31
1925
Ivankovo
Soviet Union
17
03 3
3
Ryan, Michael Robert , 27
08.19 Aug. 19
1987
Hungerford
United Kingdom
16
15
4
Borel, Eric , 16
09.23 Sep. 23/24
1995
Solliès-Pont & Cuers
France
15
04 4
5
Leibacher, Friedrich , 57
09.27 Sep. 27
2001
Zug
Switzerland
14
18
6
Wagner, Ernst August , 38
09.04 Sep. 4
1913
Degerloch & Mühlhausen/Enz
German Empire
14
11
7
Hz
06.32
1939.9
Kz
Fz
100.9
100.9
8
Unknown
06.10 June 10/11
1945
Rouen
France
14
09 9
9
Dornier, Christian , 31
07.12 July 12
1989
Luxiol
France
14
08 8
10
Dembsky, Vladimir
02.15 Feb. 15
1904
Warsaw
Russian Empire
13
10
11
Bogdanović, Ljubiša , 60
04.09 April 9
2013
Velika Ivanča
Serbia
13
1
12
Bird, Derrick , 52
06.02 June 2
2010
Copeland , Cumbria
United Kingdom
12
11
13
Pz
08.32
1989.9
Rz
Soz
100.9
100.9
14
Marimon Carles, Jose, 26
05.21 May 21
1928
Pobla de Ferran
Spain
10
02 2
15
Hedin, Tore , 25
08.22 Aug. 22
1952
Saxtorp & Hurva
Sweden
9
10–20
16
Izquierdo, Antonio, 53 Izquierdo, Emilio, 58
08.26 Aug. 26
1990
Puerto Hurraco
Spain
9
06.12 6–12
17
Palić, Vinko, 28
01.01 Jan. 1
1993
Zrinski Topolovac
Croatia
9
05.7 5–7
18
Tranchita, Rosario
09.25 June 25
1925
Librizzi
Italy
9
04 4

Questions and formulas:
Question: How many kills have 15 as the injured, with a year prior to 1987?
Formula: SUM(FILTER(F1, (G1=15)*(C1<1987)))
Formula2: SUM(FILTER(F2:F18, (G2:G18=15)*(C2:C18<1987)))
Level: easy