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Peak intensities of the PBNA nitro derivatives and DNPOH in various aging environments and temperatures (dry at the top row and wet at the bottom row). The signal intensities of DNPOH are scaled down by 5-fold at 55 °C and 10-fold at 64 °C (the peak intensities = peak area in cps2/sample weight in mg). The peak intensities do not reflect the relative concentrations of different measured species.
