I think the annotation on this data is wrong, and there is a relevant column missing. It's wrong in the original paper too.
I'm pretty sure the "mean" value quoted should be the median, and that the "average" value on the paper, which is missing in your data is actually the mean.
It's a shame that they didn't include the full dataset, because this is quite a nasty piece of data :-)
I think the annotation on this data is wrong, and there is a relevant column missing. It's wrong in the original paper too.
I'm pretty sure the "mean" value quoted should be the median, and that the "average" value on the paper, which is missing in your data is actually the mean.
It's a shame that they didn't include the full dataset, because this is quite a nasty piece of data :-)