 Energy Levels of Neutral Strontium by NIST

Tabulated strontium electron configurations, atomic terms, total angular momentum and energy levels in $\mathrm{c}{\mathrm{m}}^{-1}$. Multiplication by $100$ converts to ${\mathrm{m}}^{-1}$. The entries for $5s5p$ and $5s6s$ independently test assignments inferred from rounded optical wavelengths.