Tallinn dominates the tourism market significantly in terms of inbound arrivals because of the presence of the harbour
and international airport. According to a survey of foreign visitors
conducted in Tallinn in 2014, the capital city functions as a sole
destination for 50% of foreign tourists, and the share was even
higher in 2011 when it reached 69% (TNS Emor, 2014). Hence, if
one-city visits had been included, the statistical analysis of tourists'
regional movements would have been distorted. The database
consists of a total of 4,06,590 visits by 2,15,643 different phone IDs
(visitors). This means that many of the visitors made more than one
trip during the study period.