Boxplot whiskers for a joural publication using APA style guide

I want to submit a manuscript with a journal recommending the APA style guide for formatting.

When looking at my boxplots, a colleague of mine wondered why the whiskers do not represent the 95% confidence interval. It is the default setting for matplotlib and I did not question that so far.

According to the very good Wikipedia article on boxplots there are different possibilities for whiskers representation:

• the minimum and maximum of all of the data


• the lowest datum still within 1.5 IQR of the lower quartile, and the highest datum still within 1.5 IQR of the upper quartile (often called the Tukey boxplot)


• one standard deviation above and below the mean of the data


• the 9th percentile and the 91st percentile


• the 2nd percentile and the 98th percentile

Does anybody know what is the most common whisker boundary and if there is a recommendation in the APA style?