Difference area over the fluence. The upper panel shows the fit for the two most abundant daughter species, the bottom panel shows the fit for selected bands of parental species. The points are the experimentally obtained values and the lines are the best fit using Eq. (17). The difference areas of CH₃OH, CH₄, and NH₃ were multiplied by a constant, as indicated, for better visualization. However, the values of A_∞ and the cross-section of these species were calculated from the original data. The results from models Fn and Gn are shown in Table 5. In this figure, higher amplitude does not mean higher destruction or formation of the molecules.