I am happy with the majority of the revisions and think the paper should be published subject to some final minor revisions.

Abstract: The wording of "may have resulted from diverse reasons including, apart from unaccounted precursors also matrix effects." is unclear and should be rewritten.
page4, line 5: I think you have an extra )
page 9, line 16: change to "can cause significant"
page 14, line 7, change from "reduced" to "reduce"
Page 15, line 26: space between with and UV
Page 19, line 11: What was dominated by XYL/EBENZ? Reactivity?
Page 20, line 1: This information would be very useful for others looking at similar emissions. Can you put in a table in SI rather than just the figure?
Page 20, line 15. This sentence is difficult to understand. "did not suggest inducing any difference"
Page 20, line 19: Not sure what you mean by "tendency H:C"?
Page 21, line 3. I dont understand this sentence "we could match the yields....." Please reword.
Page 22, section 3.7: Your explanation for the discrepnacy in the H:C doesn't make sense. Adding an OH to the ring instead of a H doesn't change the H:C ratio. Surely this relates to the amount of ring opened versus ring closed species. A very important but missing factor here is the amount of NO2 present. I assume NO2 is very high since you've titrated the NO with ozone? Please discuss the amount of NO2 in the two systems. At high concentrations of NO2, there will be more competition for the aromatic adduct between O2 and NO2.
Figure 5: I cant really see the colour of the NO3 and NH4 circles as the lines are too think. Can this be modified.