Table:
0
A
B
C
D
E
F
1
Call sign
Launched
Transmitting from
Coverage
Languages
Frequency
2
XEZV
10 May 1979
Guerrero ( Tlapa de Comonfort )
Guerrero Oaxaca Puebla
Nahuatl Mixtec Tlapanec
800 AM
3
XETLA
15 September 1982
Oaxaca ( Tlaxiaco )
Oaxaca Guerrero Puebla
Mixtec Triqui
930 AM
4
XEPUR
2 October 1982
Michoacán ( Cherán )
Michoacán
Purepecha
830 AM
5
XETAR
11 November 1982
Chihuahua ( Guachochi )
Chihuahua Sinaloa Durango
Tarahumara Tepehuano
870 AM
6
XEPET
29 November 1982
Yucatán ( Peto )
Yucatán Quintana Roo Campeche
Yucatec Maya
730 AM
7
XEVFS
27 April 1987
Chiapas ( Las Margaritas )
Chiapas Guatemala
Tojolabal Mam Tseltal Tsotsil Popti
1030 AM
8
XEANT
28 September 1990
San Luis Potosí ( Tancanhuitz de Santos )
San Luis Potosí Hidalgo Querétaro Veracruz
Nahuatl Pame Wastek
770 AM
9
XEGLO
18 November 1990
Oaxaca ( Guelatao de Juárez )
Oaxaca Veracruz
Zapotec Mixe Chinantec
780 AM
10
XEZON
20 November 1991
Veracruz ( Zongolica )
Veracruz Oaxaca Puebla Tlaxcala
Nahuatl
1360 AM
11
XEOJN
14 December 1991
Oaxaca ( San Lucas Ojitlán )
Oaxaca Puebla Veracruz
Mazatec Cuicatec Chinantec
950 AM
12
XEJMN
3 April 1992
Nayarit ( Jesús María )
Nayarit Jalisco Durango Zacatecas
Cora Huichol Tepehuano Nahuatl
750 AM
13
XEJAM
5 May 1994
Oaxaca ( Santiago Jamiltepec )
Oaxaca Guerrero
Mixtec Amuzgo Chatino
1260 AM
14
XEQIN
15 June 1994
Baja California ( San Quintín )
Baja California
Mixtec Zapotec Triqui
1160 AM
15
XECTZ
21 August 1994
Puebla ( Cuetzalan )
Puebla Hidalgo Veracruz
Nahuatl Totonac
1260 AM
16
XEXPUJ
22 January 1996
Campeche ( Xpujil )
Campeche Quintana Roo
Yucatec Maya Ch'ol
700 AM
17
XEETCH
19 February 1996
Sonora ( Etchojoa )
Sonora Sinaloa Chihuahua
Mayo Yaqui Guarijio
700 AM
18
XECOPA
17 July 1997
Chiapas ( Copainalá )
Chiapas Tabasco
Zoque Tzotzil
1210 AM
19
XETUMI
12 May 1998
Michoacán ( Tuxpan )
Michoacán Edo. de México Querétaro
Mazahua Otomi
1010 AM
20
XECARH
1 August 1998
Hidalgo ( Cardonal )
Hidalgo Querétaro Veracruz San Luis Potosí
Ñha-ñhu Nahuatl
1480 AM

Questions and formulas:
Question: What frequency does Chihuahua Sinaloa Durango cover?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Chihuahua Sinaloa Durango"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,D2:D20="Chihuahua Sinaloa Durango"),6))
Level: medium
Question: How many times does the call sign XEZV appear?
Formula: ROWS(UNIQUE(FILTER(C1, A1="XEZV")))
Formula2: ROWS(UNIQUE(FILTER(C2:C20, A2:A20="XEZV")))
Level: medium
Question: What languages are spoken when call sign XEJAM is used?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,A1="XEJAM"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F20,A2:A20="XEJAM"),5))
Level: medium