Fig. 2. Experimental signals for RO₂ and ROOR products. Grey areas: lights OFF. Orange areas: NO on. Black lines = CH₃O₂. Blue lines = other RO₂. Red lines = ROOR (and ROOR′). Signals have been scaled for clarity. (A) CH₃O₂ and H₃COOCH₃ (both x½). (B) CD₃O₂ and D₃COOCD₃ (both x2). (C) ¹³CH₃O₂ and ¹³CH₃OO¹³CH₃ (x3). (D) C₂H₅O₂ and C₂H₅OOC₂H₅ (both x2). (E) C₂H₅O₂, CH₃O₂ and C₂H₅OOCH₃. (F) 1-C₃H₇O₂ and 1-C₃H₇OOC₃H₇ (x3). (G) i-C₃H₇O₂ and i-C₃H₇OOC₃H₇ (x20). (H) i-C₃H₇O₂, CH₃O₂, and i-C₃H₇OOCH₃. (I) 1-C₄H₉O₂ (x2) and 1-C₄H₉OOC₄H₉ (x19). (J) t-C₄H₉O₂ (x1/2) and t-C₄H₉OOC₄H₉.