Dear Qingyan Fu,

please find in the attached document my detailed review of the revised version 03 of your manuscript, including your responses to the referees. I recommend careful consideration of the six open points before submission of the revised manuscript.

After having received your revised manuscript, I will provide my response and final decision in short time, since the remaining open points are clearly stated and can be answered straightforward.

Best regards,

Andreas Petzold

Dear Qingyan Fu

thank you for considering the latest requests for correction. You manuscript is now accepted for publication in in ACP after few technical corrections have been made.

The corrections are requested for the following items (page and line numbers refer to the annotated manuscript attached to your latest Author's Response):

page 7, line 33: Do you mean here ""peak searching and clustering algorithm" ?

Figure 2: You may want to use the character "µ" for the axis titles.

Figure 3, right panel: I suggest using single - line axis titles.

Figure 5, top panel: Please report the unit on the y - axis for the particle size distribution. If it is similar to Fig. 7 I suggest adding "with the y-axis representing particle numbers detected at each size bin at constant sample flow in the entire study" or adequate. I propose the same modification to Fig. 7 capture.

Best regards,

Andreas Petzold