What are Guatemala's main land border crossings and how long are the waits at each?

SAT's 'Ubicación y horario de Aduanas' directory lists 22 customs offices in four regions (Central 5, North-east 9, West 4, South 4), each with its address. Besides the five in the Central region, the Tikal office (Mundo Maya International Airport) and the offices of Puerto Barrios, Santo Tomás de Castilla and Puerto Quetzal, the other 13 are: in San Marcos, Tecún Umán I, Tecún Umán II (Puerto Fronterizo Ingeniero Juan Luis Lizarralde Arrillaga) and El Carmen (Malacatán); in Huehuetenango, La Mesilla (La Democracia); in Petén, Melchor de Mencos and El Ceibo (La Libertad); in Chiquimula, La Ermita (Anguiatú village, Concepción Las Minas); in Jutiapa, Pedro de Alvarado (Moyuta), Valle Nuevo (Jalpatagua) and San Cristóbal (Atescatempa); and three integrated customs offices with addresses in Honduras: Corinto (Omoa, Cortés), Agua Caliente (Santa Fe, Ocotepeque) and El Florido (Copán Ruinas, Copán). The directory does not say which country each office borders and publishes no waiting times.