The work reported in the paper continues previous research on the description of Danish intonation in mathematical terms using a linear regression model. The present paper focuses on the first post-tonic syllable which constitutes the fundamental frequency peak in the stress group in Standard Danish. The results indicate that--in contradistinction to the stressed syllables--the F0 variation over the sentence in the first post-tonics is explained mainly by their position in the sentence, and to a much lesser degree by their position in the prosodic phrase.