Indicator: All flows Balance Index

Within the balance dimension the primary indicator is the balance index, defined as the ratio between the difference in inflow-outflow and the maximum value of inflow or outflow. The index takes values from -1 to 1, where -1 means outflow only, 0 means perfectly balanced flow, and 1 means inflow only.
is still observed in, inter alia, Croatia's Dalmatian coast, Switzerland, and western Austria, as well as northern Finland. On the other hand, the senders group includes most of the regions of Central and Eastern Europe, although there are exceptions here as well (e.g. the Zachodniopomorskie voivodeship in Poland). The spatial distribution indicates that a strongly peripheral location can determine the nega-tive balance of flows. However, this principle does not apply to regions with high tourism potential and settlement attractiveness (the Mediterranean). The box-plot analysis confirms the above conclusions. The senders group includes mainly the EU states that joined the EU in 2004-2013, as well as less-developed regions and the Danube macroregion. In turn, the receivers group is dominated by regions from the Alpine macroregion and, surprisingly (further research is required), regions with a low total FUA population. Conclusions in this respect must be cautious, because the balance indicator is significantly influenced by the size of the region (in the case of larger NUTS 2 regions the balancing is done more internally).