Complex sentence: This problem has been addressed by the VAN group by suggesting precise criteria that distinguish true precursory SES from non-precursory signals, thus successfully separating SES from electric signals due to digital radio transmissions.
Split into simpler sentences: This problem has been addressed by the VAN group by suggesting precise criteria that distinguish true precursory SES from non-precursory signals. The application of these criteria successfully separates SES from electric signals due to digital radio transmissions.