Report: The researchers and facilitators asked the participants of the French Citizens' Convention for Climate (CCC) to fill out questionnaires that were distributed during the weekends and self-administered. During the first sessions of the CCC, a questionnaire from the facilitation team and one from the researchers' collective were proposed at the beginning of the session in the hemicycle of the French Economic, Social and Environmental Council (entry questionnaires) and at the end of the session (exit questionnaires), whereas during the last sessions, only one questionnaire from the researchers' collective and one from the facilitation team (none in sessions 5 and 8) were proposed at the end, before the session closed. In this volume, we present all the responses to the questionnaires of the researchers' collective that were administered during each session (the responses to the questionnaires of the facilitation team are not reproduced). The volume assembles eight booklets, one per session.