Thank you for your constructive suggestion. We have moved the discussion part in results to Discussion. The conclusions are recompiled and added according to your suggestions. Please refer to Line 498-550 and Line 551-589.
As a structural suggestion, considerable part of the Results are rather belong to Discussion (thus making the better balance between these two chapters, in extent and in content, too): I suggest point 3.3 (or maybe also 3.2) to Discussion – as they are discussing the already shown results. Conclusion – it shouldn’t be a summary as should be recompiled. The second part of the 3rd paragraph and the 4th paragraph are enough, completed by the estimated error of the main conclusive potantial value.