PP-ind is a repository of research data on industrial pair programming sessions. Since 2007, our research group has collected audio-video-recordings and questionnaire data in 13 companies. A total of 57 developers worked together (mostly in groups of two, but also three or four) in 67 sessions with a mean length of 1:35 hours. A separate tech report provides many details on how this data was collected. While we cannot share the original video recordings due to confidentiality agreements, we do provide transcripts of the pairs' dialog in this data set. Note that we transcribe our data on an is-needed basis. Early versions of this data set will therefore contain only few and partial transcripts which will be amended over time. Files named "session-<ID>-transcript.txt" contain original quotations in the language spoken by the recorded developers. For non-English sessions, we also provide non-authoritative "session-<ID>-transcript_translated.txt" files (following the same is-needed rule for translating the originals). All our analyses, however, are performed on the raw data as reflected in the original transcripts. See file "transcription-notation.txt" for details on the special notation we use.