This paper presents an alternative interpretation of an experimental public goods game dataset, particularly on the understanding of the observed antisocial behaviour phenomenon between subjects of a public goods experiment in different cities around the world. The anonymous nature of contributions and punishments in this experiment are taken into account to interpret results. This is done by analysing dynamic behaviour in terms of mean contributions across societies and their association with antisocial punishment. By taking into account the heterogeneity between the cities in which the public goods experiment has been performed, this analysis show a contrasting interpretation. Instead of one trend across cities, two opposite trends are seen across different cities. In addition, we find that the presence of these trends to have an impact on the role antisocial and prosocial behaviour in public goods games. When accounting for these trends, the antisocial and prosocial behaviour is found to have a significant role in Western societies.