Table:
0
A
B
C
D
E
F
1
Number Range
Introduced
Builder
Engine
Seats
Withdrawn
2
1
1934
Park Royal
1 AEC of hp (kW)
69
1955
3
2–4
1934
Park Royal
2 AEC of hp (kW)
44
1954–1958
4
5–7
1935
Gloucester RCW
2 AEC of hp (kW)
70
1957–59
5
8–9, 13–16
1936
Gloucester RCW
2 AEC of hp (kW)
70
1957–60
6
10–12
1936
Gloucester RCW
2 AEC of hp (kW)
63
1956–57
7
17
1936
Gloucester RCW
2 AEC of hp (kW)
None
1959
8
18
1937
Gloucester RCW
2 AEC of hp (kW)
49
1957
9
19–33
1940–41
GWR, Swindon
2 AEC of hp (kW)
48
1960–62
10
34
1941
GWR, Swindon
2 AEC of hp (kW)
None
1960
11
35–38
1941–42
GWR, Swindon
2 AEC of hp (kW)
60 + 44
1957, 1962

Questions and formulas:
Question: What date was introduced where it was withdrawn 1955?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,F1=1955),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F11,F2:F11=1955),2))
Level: medium
Question: What engine was introduced in 1935?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,B1=1935),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F11,B2:B11=1935),4))
Level: medium
Question: What is the number range for the Gloucester RCW builder introduced in 1937?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,(C1="gloucester rcw")*(B1=1937)),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F11,(C2:C11="gloucester rcw")*(B2:B11=1937)),1))
Level: medium