Atomic abundances are entered relative to solar abundances as
defined in [Grevesse, Noels and Sauval 1996], with being defined as the solar
value and the current default. Currently supported range for these values
is
.
The atomic species are all elements up to and including copper (Z=30). Note that as of version 2.2.0 many of these are treated using scaled hydrogenic atomic rate data.