Table:
0
A
B
C
D
E
F
G
H
1
Date(s) conducted
Cons
Plaid Cymru
Lib Dem
UKIP
Green
Others
Lead
2
5 May 2011
22.5%
17.9%
8.0%
4.6%
3.4%
6.7%
14.4%
3
14 April 2011
20%
18%
8%
4%
2%
4%
24%
4
30 March 2011
20%
16%
8%
6%
2%
2%
25%
5
8 March 2011
20%
18%
5%
5%
4%
2%
25%
6
26 January 2011
20%
21%
8%
4%
2%
4%
21%
7
22 December 2010
22%
21%
5%
5%
3%
2%
20%
8
24 November 2010
20%
20%
9%
4%
3%
4%
21%
9
27 October 2010
18%
23%
9%
6%
2%
3%
21%
10
3 May 2007
21.4%
21.0%
11.7%
4.0%
3.5%
8.8%
8.6%

Questions and formulas:
Question: On 5 May 2011, what was the lead percentage?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,A1="5 may 2011"),8))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H10,A2:A10="5 may 2011"),8))
Level: medium
Question: On what date was the lead 8.6%?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:H1,H1="8.6%"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:H10,H2:H10="8.6%"),1))
Level: medium