Nielsen BDS has begun tracking data for four new regional Mexican stations.

Beginning Oct. 9, Nielsen BDS data will be available for XHIM in El Paso, Tex., KESO in McAllen, Tex., KXPD in Portland, Or. and KIST in Santa Barbara, Calif.

The move is part of Nielsen BDS' continuous expansion of its coverage of Latin radio in the United States. Regional Mexican is the largest Latin radio format in the country.

Nielsen BDS currently monitors 51 regional Mexican stations. Its new additions will bring this number up to 54.