Table:
0
A
B
C
D
E
1
Location
July (°C)
July (°F)
January (°C)
January (°F)
2
St. John’s
20/11
68/52
−1/−9
30/16
3
Gander
21/11 °C
71/51
−3/−12
26/11
4
Corner Brook
22/13
71/55
−3/−10
28/15
5
Stephenville
23/15
75/59
−1/−8
30/17
6
Happy Valley – Goose Bay
20/10 °C
68/49
−13/−23
9/−9

Questions and formulas:
Question: What is the total number of January (°C) temperatures when the July (°C) temperatures were 22/13?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="22/13"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="22/13"),4))
Level: medium
Question: What is the total number of January (°C) temperatures when the July (°C) temperatures were 23/15?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="23/15"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,B2:B6="23/15"),4))
Level: medium
Question: In what location were the January (°F) temperatures 30/17?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="30/17"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,E2:E6="30/17"),1))
Level: medium
Question: What were the  July (°C) temperatures when the July (°F) temperatures were 71/55?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="71/55"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,C2:C6="71/55"),2))
Level: medium
Question: What were the  January (°F) temperatures in the Corner Brook location?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="Corner Brook"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E6,A2:A6="Corner Brook"),5))
Level: medium