The -components of 3 and 4 are slightly larger than half of the total -S0 value, indicating aromatic character of the residuals of their 3 n,* states. In contrast, for the remaining 6-MR monoheteroaromatics, the -component is lower in the 3 n,* state than in S0. More comprehensive EDDB results, specifically dissecting  and  contributions, are provided in section 2.2 of the Supporting Information.