Table:
0
A
B
C
D
E
F
1
Call sign
Frequency MHz
City of license
ERP W
Class
FCC info
2
W291CH
106.1
Pittsfield, Massachusetts
10
D
FCC
3
W242AT
96.3
Williamstown, Massachusetts
250
D
FCC
4
W252BG
98.3
Lee, Massachusetts
13
D
FCC
5
W254AU
98.7
Great Barrington, Massachusetts
250
D
FCC
6
W266AW
101.1
North Adams, Massachusetts
10
D
FCC

Questions and formulas:
Question: If the call sign is w291ch what's the ERP W corresponding to that sign?
Formula: SUMIFS(D1,A1,"w291ch")
Formula2: SUMIFS(D2:D6,A2:A6,"w291ch")
Level: easy
Question: For the call sign w242at what's the city the license plate is registered to?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="w242at"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,A2:A6="w242at"),3))
Level: medium
Question: What's the Class for the city the license plate was issued in great barrington, massachusetts?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="great barrington, massachusetts"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F6,C2:C6="great barrington, massachusetts"),5))
Level: medium