Relevant simulation results (3-day averaged) for urban site during FP and SP. (A and B) Simulated average diurnal variations in OH and HO2. (C and D) Daytime (08:00 to 16:00 LT) average OH-HO2-RO2 budget. Units: ppb h−1. (E and F) Model-simulated average chemical budgets of O3.