Results of [Eu/Fe] vs [Fe/H] for ten realisations of HC0 model. With the colour map, we show the time at which the realisation passes through a certain point in the [Eu/Fe] vs [Fe/H] plane. We also report the initial point and the time at which the first NSM exploded. With solid lines are reported the paths that each realisation follows. The path of each realisation is labelled with different colours that indicate the mass of the proto-galaxy to whom the realisation belongs.