A contextual inquiry may gather data from as few as 4 users (for a single, small task) to 30 or more.
Following a contextual inquiry field interview, the method defines interpretation sessions as a way to analyze the data.
In an interpretation session, 3-8 team members gather to hear the researcher re-tell the story of the interview in order.
As the interview is re-told, the team add individual insights and facts as notes.
They also may capture representations of the user's activities as work models (defined in the Contextual design methodology).