The authors have made substantial changes to the paper, in line with the reviewers suggestions and the paper is text wise (after final formal intended check of the English spelling suitable for publication).
However, I still would urge the authors to look their use of colours in the Figures. Especially the use of pink in Figures 6 and 7 may get lost during publication even online. Maybe better to use red instead of pink.
Where you have filled markers you can add a black line at the edge in some of your Figures.
For clarity you can maximize the use of axis, for example in Fig 8.
you could have a y-axis running up to +20 instead of +30 and the x-axis could run from -1 to +5 instead of -2 to +8. In short have a another close look at your Figures to improve them.
This is a minor task and after implementation of this and the final english correction, they revised version should be directly suitable for publication in BG

All requested changes by reviewers and editorial comments were implemented by the authors hence I recommend to publish in current form.