"Least squares method." . . "Atmospheric composition." . . "Molecular spectra." . . "Spectrum analysis." . . . . "\"The development of efficient techniques for extracting the maximum amount of information from the spectra of atmospheric molecules with a minimum of observer bias is discussed. In particular, an overview of the methods of line by line and whole band analysis is presented.\"--NTIS abstract."@en . . . . . . "Least squares methods of analyzing spectroscopic data" . "Least squares methods of analyzing spectroscopic data"@en . . . . . . . . . . . . . "Spectroscopic analysis." . .