1. The LINEFIT12 software is obtained on request from the KIT Karlsruhe
(http://www.imk-asf.kit.edu/english/897.php)
2.The HBr and HCl spectra are saved on folders of HBr_spectra and HCl_spectra, respectively. The meaning of each spectrum name is presented in spectra_name_clarification
3. The input files for HBr and HCl spectra are hbr_lft12.inp and hcl_lft12.inp, respectively, and saved on  folders of HBr_spectra and HCl_spectra, respectively. 
4. With the input file and the spectra, the results of this paper can be easily repeated. NOTE: the spectra path in the input file should be adapted to each target spectrum.
