Dear Authors,

thank your very much again for your comprehensive explanations and answers to the reviewer questions related to the initially submitted version of the manuscript. Reviewer #1 (and the editor) is quite satisfied with the given answers. Also the points of reviewer #2 have been adequately addressed. The manuscript is on a good way, the revised version shows considerable improvement.
Nevertheless, some content of your replies did not enter the revised manuscript, but it should to make a few points clearer.

So your paper is “accepted subject to minor changes”.

As your answers given in your response reports are of good quality you should take up some of the formulated content (in a condensed manner) into the manuscript.
You can find good hints for this in the new referee report (09/09/19). There, reviewer makes clear suggestions (colour coded in green) how to update your manuscript.
Please follow this suggestion to generate the final manuscript.