* This spectral line will not be evident with spectrometers configured with 300- or 600-lines/mm gratings.

** With spectrometers that have 1200-, 1800-, 2400- or 3600-lines/mm gratings, spectral lines will be evident at 576.96 nm and 579.07 nm.

* This spectral line will be evident only with spectrometers configured with 1800-, 2400-, or 3600-lines/mm gratings.