Table:
0
A
B
C
D
E
F
G
H
1
Year
Class
Tyres
Team
Co-Drivers
Laps
Pos.
Class Pos.
2
1981
C
M
WM A.E.R.E.M.
Serge Saulnier Michel Pignard
15
DNF
DNF
3
1983
C
M
Ford France
Henri Pescarolo
174
DNF
DNF
4
1986
C1
M
Brun Motorsport
Didier Theys Alain Ferté
89
DNF
DNF
5
1993
C1
M
Peugeot Talbot Sport
Yannick Dalmas Teo Fabi
374
2nd
2nd
6
1994
GT1
G
Le Mans Porsche Team Joest Racing
Hans Joachim Stuck Danny Sullivan
343
3rd
2nd
7
1995
WSC
G
Porsche Kremer Racing
Hans Joachim Stuck Christophe Bouchut
289
6th
2nd
8
1996
GT1
M
Porsche AG
Hans Joachim Stuck Bob Wollek
353
2nd
1st
9
1997
GT1
G
Porsche AG
Hans Joachim Stuck Bob Wollek
238
DNF
DNF
10
1998
GT1
M
Toyota Motorsports Toyota Team Europe
Ralf Kelleners Geoff Lees
330
DNF
DNF
11
1999
LMGTP
M
Toyota Motorsports Toyota Team Europe
Ralf Kelleners Allan McNish
173
DNF
DNF

Questions and formulas:
Question: Who were the co drivers past 1994 in the WSC class?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,(A1>1994)*(B1="wsc")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H11,(A2:A11>1994)*(B2:B11="wsc")),5))
Level: medium