Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Call sign | Launched | Transmitting from | Coverage | Languages | Frequency |
| --- | --- | --- | --- | --- | --- |
| XEZV | 10 May 1979 | Guerrero ( Tlapa de Comonfort ) | Guerrero Oaxaca Puebla | Nahuatl Mixtec Tlapanec | 800 AM |
| XETLA | 15 September 1982 | Oaxaca ( Tlaxiaco ) | Oaxaca Guerrero Puebla | Mixtec Triqui | 930 AM |
| XEPUR | 2 October 1982 | Michoacán ( Cherán ) | Michoacán | Purepecha | 830 AM |
| XETAR | 11 November 1982 | Chihuahua ( Guachochi ) | Chihuahua Sinaloa Durango | Tarahumara Tepehuano | 870 AM |
| XEPET | 29 November 1982 | Yucatán ( Peto ) | Yucatán Quintana Roo Campeche | Yucatec Maya | 730 AM |
| XEVFS | 27 April 1987 | Chiapas ( Las Margaritas ) | Chiapas Guatemala | Tojolabal Mam Tseltal Tsotsil Popti | 1030 AM |
| XEANT | 28 September 1990 | San Luis Potosí ( Tancanhuitz de Santos ) | San Luis Potosí Hidalgo Querétaro Veracruz | Nahuatl Pame Wastek | 770 AM |
| XEGLO | 18 November 1990 | Oaxaca ( Guelatao de Juárez ) | Oaxaca Veracruz | Zapotec Mixe Chinantec | 780 AM |
| XEZON | 20 November 1991 | Veracruz ( Zongolica ) | Veracruz Oaxaca Puebla Tlaxcala | Nahuatl | 1360 AM |
| XEOJN | 14 December 1991 | Oaxaca ( San Lucas Ojitlán ) | Oaxaca Puebla Veracruz | Mazatec Cuicatec Chinantec | 950 AM |
| XEJMN | 3 April 1992 | Nayarit ( Jesús María ) | Nayarit Jalisco Durango Zacatecas | Cora Huichol Tepehuano Nahuatl | 750 AM |
| XEJAM | 5 May 1994 | Oaxaca ( Santiago Jamiltepec ) | Oaxaca Guerrero | Mixtec Amuzgo Chatino | 1260 AM |
| XEQIN | 15 June 1994 | Baja California ( San Quintín ) | Baja California | Mixtec Zapotec Triqui | 1160 AM |
| XECTZ | 21 August 1994 | Puebla ( Cuetzalan ) | Puebla Hidalgo Veracruz | Nahuatl Totonac | 1260 AM |
| XEXPUJ | 22 January 1996 | Campeche ( Xpujil ) | Campeche Quintana Roo | Yucatec Maya Ch'ol | 700 AM |
| XEETCH | 19 February 1996 | Sonora ( Etchojoa ) | Sonora Sinaloa Chihuahua | Mayo Yaqui Guarijio | 700 AM |
| XECOPA | 17 July 1997 | Chiapas ( Copainalá ) | Chiapas Tabasco | Zoque Tzotzil | 1210 AM |
| XETUMI | 12 May 1998 | Michoacán ( Tuxpan ) | Michoacán Edo. de México Querétaro | Mazahua Otomi | 1010 AM |
| XECARH | 1 August 1998 | Hidalgo ( Cardonal ) | Hidalgo Querétaro Veracruz San Luis Potosí | Ñha-ñhu Nahuatl | 1480 AM |
Question:
How many times does the call sign XEZV appear?
Answer:
1.0