Fig. 4

The correlation between the number to visitors to sixteen selected parks and the relative distance from Yoyogi Park to other fifteen parks. The X-axis is the relative distance in kilometers from Yoyogi Park to other fifteen parks including Meiji Jingu Gaien, Shinjuku Chuo Park, Sotobori Park, Ueno Park, Toyama Park, Hibiya Park, Sarue Onshi Park, Hamarikyu Garden, Komazawa Olympic Park, Kasai Rinkai Park, Oi Wharf Central Bayside Park, Odaiba Kaihin-Koen, Aoyama Cemetery, Yanaka Cemetery, and Somei Cemetery. The Y-axis shows the total number of travelers from dengue-positive countries who visited each park. The blue line is the linear regression line. The correlation coefficient was calculated by the Pearson’s moment correlation