| Value | Category | 
                                    
                    
                        | 1 | Distrito Federal | 
                                    
                    
                        | 2 | Guadalajara | 
                                    
                    
                        | 3 | Monterrey | 
                                    
                    
                        | 4 | Puebla | 
                                    
                    
                        | 5 | León | 
                                    
                    
                        | 7 | San Luis Potosí | 
                                    
                    
                        | 8 | Mérida | 
                                    
                    
                        | 9 | Chihuahua | 
                                    
                    
                        | 10 | Tampico | 
                                    
                    
                        | 12 | Veracruz | 
                                    
                    
                        | 13 | Acapulco | 
                                    
                    
                        | 14 | Aguascalientes | 
                                    
                    
                        | 15 | Morelia | 
                                    
                    
                        | 16 | Toluca | 
                                    
                    
                        | 17 | Saltillo | 
                                    
                    
                        | 18 | Villahermosa | 
                                    
                    
                        | 19 | Tuxtla Gutiérrez | 
                                    
                    
                        | 21 | Frontera Tijuana | 
                                    
                    
                        | 24 | Culiacán | 
                                    
                    
                        | 25 | Hermosillo | 
                                    
                    
                        | 26 | Durango | 
                                    
                    
                        | 27 | Tepic | 
                                    
                    
                        | 28 | Campeche | 
                                    
                    
                        | 29 | Cuernavaca | 
                                    
                    
                        | 31 | Oaxaca | 
                                    
                    
                        | 32 | Zacatecas | 
                                    
                    
                        | 33 | Colima | 
                                    
                    
                        | 36 | Querétaro | 
                                    
                    
                        | 39 | Tlaxcala | 
                                    
                    
                        | 40 | La Paz | 
                                    
                    
                        | 41 | Cancún | 
                                    
                    
                        | 43 | Pachuca | 
                                    
                    
                        | Sysmiss |  | 
                            
            Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.