Dear Johannes,

first of all, I would like to apologise for the late reply. You should have received this message already some weeks ago, but this somehow got lost in our system. I hope that this delay did not cause problems for you or on of the co-authors.

Both reviewers were quite positive about your MS but raised some important issues that I fully support. Based on your answers in the discussion forum, you're seemingly on top of these points and I would thus like to invite you to submit a revised version of your MS where the reviewer's concerns are addressed.

Again my apologies for the delay. With the best wishes, Helge Niemann

Dear Johannes Hepp,

your revisions were considered by two reviewers and both think that the MS has improved and is now acceptable for publication; a point of view I support. There are a few minor things that you should check. Some sentences are rather lengthy/complicated, so those could perhaps be made a bit easier for the reader. Also, please check spelling and grammar throughly.

With the best wishes, Helge Niemann