In the paper statistical methods for the interpretation of CPT data for the definition of subsoil stratigraphy have been applied to a subsoil CPTU data set of the Italian Center of Aerospatial Research (CIRA) in Capua (Italy). Results obtained by following the method proposed by Wickremesinghe and Campanella (1991) have been compared with those obtained by a geostatistical method recently proposed by Spacagna (2014), based on the spatial variability analysis of CPTU data. The latter results showed a more detailed definition of the transitions between different subsoil layers along the investigated vertical axes.