However, if the plot shows a mean of 57, an interdecile range from 53 to 61 actually means that the middle 80% of experiments were within ±4 percentage points of the mean UAS for their target language.
(before computing this range, we adjust each UAS score for target T by subtracting the mean UAS from the experiments with target T , and adding back the mean UAS from all 10,000 experiments (e.g., 57).)