The results of calculations of the sensitivity indicators to the temperature, as well as the average geometrical heights of localization of the effective response to the temperature variations are presented for the central line depths, for the line depths on half-width, and for the equivalent widths of the 604 Fe I and 58 Fe II absorption lines. This list of unblended solar lines in the range of the wavelengths 401.0-901.0nm contains the maximum of lines suitable for the analysis of the fine structure of the line profiles and primarily for study of the line asymmetries.