Haser model profiles for the observed species  (a) C₂ with C₂H₂ and C₃ parents; (b) CH with CH₂ and CH₄ parents; (c) CN with HCN, C₂N₂, and CH₃CN parents; (d) C₃ with icy grain parents; (e) NH₂ with an NH₃ parent. The plus signs represent the observed profiles of each species, and the lines through the plus signs represent the Haser model profiles.