Output probability map of the Sample of Study. A probability threshold of p ≥ 50% is used to select the PMS (in red) and classical Be candidates (in blue). On top and right number histograms of the candidates for different probabilities. In dark grey the sources which belong to either category (p(PMS)+p(CBe) ≥ 50% but p(PMS) < 50%, p(CBe) < 50%). Uncertainties are not indicated for clarity. Numbers are: PMS candidates (8470), classical Be candidates (693), either (1309), other objects (4 140 511).