Parities of 11 occupied spin-degenerated bands and symmetry functions at each symmetry points. The even and odd parities are represented by + and − signs.

Γ i	〈ψi,n|Θ|ψi,n〉 of 2mth occupied band	δ i
(0,0)	− − + + − + − + − + −	+
(0.5,0)	+ − + − + − + − + − +	−
(0,0.5)	+ − + − + − + − + − +	−
(0.5,0.5)	+ − + − + − + − − + +	−
PbCH3	topological invariant	ν = 1