Data used for the paper "Can co-location be used as a proxy for face-to-face contacts?", submitted to EPJ Data Science, with standardised time stamps. - contact.tar.bz2 contains all six contact networks, co-presence.tar.bz2 contains all six co-presence networks. Both contacts and co-presence data are formatted as tij, i.e. each line represents a contact occurring at a time t between two nodes i and j. - metadata.tar.bz2 contains the lists of nodes, with the first column being the node identifier and the second the group affiliation, when available.