Distribution of the median tremor durations measured for each subset with τ
. The different regions are shown by color-coded circles (for the broad tremor regions) and color-coded stars (for the localized tremor regions). The brown dashed line is the least squares best fit regression line. The time scale of 15 and 30 days; 2, 3, 6, and 9 months; and 1 and 2 years is denoted on the right side. The slope coefficient with 95% confidence interval and the correlation coefficient are denoted on the top left.