Hi, I am looking for online molecular emission spectra database for spectroscopic analysis of plasma. It would be great if searching in it is based on a wavelength of spectral lines/bands. For atomic spectra I found this database: http://physics.nist.gov/PhysRefData/ASD/lines_form.html But I couldn't find anything like that for molecular spectra which is essential for full analysis of spectra. And my next question is (as I am beginner in spectra analysis) what is the right and most efficient way of analysing spectra? My current procedure is that I find a peak in my spectrum then I search appropriate atoms using the peak wavelength and then I match one atom (the one which has more characteristic lines in my spectrum) for the given peak wavelength. Is there more efficient way?