The precision and recall measures for each experiment are described in Tables 1-3  Following the native speakers' intuitions from the experiment described in Section 3.2, we can assume that the discriminative power of errors should not be surprising; learners of Czech of a NIE language background are likely to make more errors than the learners of the IE group due to the differences between L1 and L2.
we need to perform a more detailed error analysis to conform or disagree with these intuitions.