In some LHAPDF sets, the interpolation table of $\alpha_s (Q^2)$ is defined in the individual .dat file (because they were generated with different $\alpha_s (M_Z)$ for example) while in NeoPDF this is a property of the grid GridPDF not the member object GridArray itself.
In some LHAPDF sets, the interpolation table of$\alpha_s (Q^2)$ is defined in the individual $\alpha_s (M_Z)$ for example) while in NeoPDF this is a property of the grid
.datfile (because they were generated with differentGridPDFnot the member objectGridArrayitself.