Fig. 1

Histogram of Averaged SHS is on the left side of the figure. The box-and-whisker diagram is on the right, the red dots are the average values, the black solid line is the median, the top of the box indicates the top 75%, and the bottom indicates the bottom 25% of the data. The whiskers indicate the upper end + 1.5 × interquartile range, and the lower end − 1.5 × interquartile range.