The 1-D flux (y axis) is in ergs/sec/cm2/angstrom.
The wavelength (x axis) is in angstroms.
The left part of the spectra are from the G430M data,
and the right part are from the G750M data -- note
that they are scaled differently in y (flux). The x axis
(wavelength) is scaled the same for all objects.
Spectra for individual objects are available via the LMC
flux page.