A .zip file containing ambient buoyancy profiles of a confined box in the presence of a vertically distributed wall-source of buoyancy. Two cases are considered, one with an unventilated environment and the second with a ventilated environment. The buoyancy measurements were obtained using dye attenuation. The data are given in .mat files. The folder contains horizontally-averaged buoyancy data examining the full height of the wall from 11 experiments. The data of the unventilated experiment contains time dependent profiles whereas the ventilated experiment contains only steady-state profiles. See readme.pdf for a description of the flow quantities presented, their units and their corresponding names in the .mat files.