 1N     = RSEAUX                            NETWORKS
 0PRICE-C PRIX (VOITURE)                     PRICE (CAR)
 0SPEED-C VITESSE (VOITURE)                  SPEED (CAR)
 0DIST-C  DISTANCE (VOITURE)                 DISTANCE (CAR)
 0PRICE-R PRIX (TRAIN)                       PRICE (RAIL)
 0SPEED-R VITESSE (TRAIN)                    SPEED (RAIL)
 0DIST-R  DISTANCE (TRAIN)                   DISTANCE (RAIL)
 0FREQ-R  FRQUENCE (TRAIN)                  FREQUENCY (RAIL)
 0PRICE-A PRIX (AVION)                       PRICE (AIR)
 0SPEED-A VITESSE (AVION)                    SPEED (AIR)
 0DIST-A  DISTANCE (AVION)                   DISTANCE (AIR)
 0FREQ-A  FRQUENCE (AVION)                  FREQUENCY (AIR)

 2S     = SOCIO-CONOMIQUES                  SOCIOECONOMIC
 0POP0014 PROP. DE LA POPULATION (GE 0-14)  PROP. OF POPULATION (AGE 0-14)
 0POP5064 PROP. DE LA POPULATION (GE 50-64) PROP. OF POPULATION (AGE 50-64)
 0POPMALE PROPORTION D'HOMMES                PROPORTION OF MEN
 0TOTEMPL PROPORTION D'EMPLOYS (TOTAL)      PROPORTION OF EMPLOYEES (TOTAL)

 3T     = BUT VOYAGE                         TRIP PURPOSE
 0BUSINESSPROPORTION DE VOYAGES AFFAIRES     PROPORTION OF BUSINESS TRIPS
 0PRIVATE PROPORTION DE VOYAGES PRIVS       PROPORTION OF PRIVATE TRIPS

 4ET    = ET CETERA                          ET CETERA
 0CONSTANTCONSTANTE DE LA RGRESSION         REGRESSION CONSTANT

