Table:
0
A
B
C
D
E
1
Scheme
Tariff code
BTs retail price (regulated)
Approx premium
Prefixes
2
Pence per call, fixed at all times
ff15
5.10p/call
7p/call
0871, 0872
3
Pence per call, fixed at all times
ff28 NTS
8.50p/call
10p/call
0871, 0872
4
Pence per call, fixed at all times
ff0 PRS
8.60p/call
10p/call
0871, 0872
5
Pence per minute, fixed at all times
g21
geographic rate or inclusive
nil
030, 033, 034, 037
6
Pence per minute, fixed at all times
g22
0.425p/min
2p/min
0843, 0844
7
Pence per minute, fixed at all times
g8
0.851p/min
2p/min
0843, 0844
8
Pence per minute, fixed at all times
g27
1.277p/min
3p/min
0843, 0844
9
Pence per minute, fixed at all times
g9
1.702p/min
4p/min
0843, 0844
10
Pence per minute, fixed at all times
(no code)
2p/min or inclusive
2p/min
0845 only
11
Pence per minute, fixed at all times
g28
2.128p/min
3p/min
0843, 0844
12
Pence per minute, fixed at all times
g10
2.553p/min
4p/min
0843, 0844
13
Pence per minute, fixed at all times
g11
3.404p/min
5p/min
0843, 0844
14
Pence per minute, fixed at all times
g6 and p27
4.255p/min
7p/min
0843, 0844, 0871, 0872
15
Pence per minute, fixed at all times
(no code)
8p/min or inclusive
~10p/min 0p/min
0870 only

Questions and formulas:
Question: What is the regulated retail price for the tariff code ff0 prs?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="ff0 PRS"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="ff0 PRS"),3))
Level: medium
Question: What is the premium associated with tariff code g9?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="g9"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="g9"),4))
Level: medium
Question: How many tariff codes have a bts retail price of 2p/min or inclusive?
Formula: ROWS(UNIQUE(FILTER(B1, C1="2p/min or inclusive")))
Formula2: ROWS(UNIQUE(FILTER(B2:B15, C2:C15="2p/min or inclusive")))
Level: medium
Question: How many tariff codes have a bts retail price of 2.553p/min?
Formula: ROWS(UNIQUE(FILTER(B1, C1="2.553p/min")))
Formula2: ROWS(UNIQUE(FILTER(B2:B15, C2:C15="2.553p/min")))
Level: medium
Question: What prefixes are priced at pence per minute, fixed at all times with a premium of 3p/min?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,(A1="Pence per minute, fixed at all times")*(D1="3p/min")),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,(A2:A15="Pence per minute, fixed at all times")*(D2:D15="3p/min")),5))
Level: medium
Question: What is the bts retail price (regulated) for tariff code g10?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="g10"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E15,B2:B15="g10"),3))
Level: medium