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Energy differences between frozen core and all electrons correlated.
MP2, MP3, MP4, B2PLYP, CCSD, and CCSD(T)

For GaF3 (Gallium trifluoride)

Energies in Hartree
Methods with standard basis sets
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVDZ daug-cc-pVTZ
Moller Plesset perturbation MP2=FULL -0.003327 -0.009586 -0.014815 -0.025713 -0.044173 -0.044173 -0.048591 -0.465392 -0.465392 -0.118121 -0.521766 -0.192355 -0.015059 -0.091943 -0.176792 -0.019170 -0.104525 -0.192251 -0.022606 -0.112838
MP3=FULL         -0.042862   -0.047072                          
MP4=FULL   -0.009070     -0.045957       -0.455122       -0.014485 -0.091706   -0.018661 -0.104068      
B2PLYP=FULL -0.001523 -0.002904 -0.004601 -0.007949 -0.014529 -0.014529 -0.015997 -0.141458 -0.141458 -0.038751 -0.158657 -0.057227 -0.004678 -0.027590   -0.005944 -0.031287   -0.007013 -0.033692
Quadratic configuration interaction QCISD(T)=FULL         -0.045836           -0.491405   -0.014333 -0.087631   -0.018359 -0.099272   -0.021669 -0.106795
Coupled Cluster CCSD=FULL         -0.044363         -0.115223 -0.482675 -0.173323 -0.013802 -0.085007 -0.166553 -0.017637 -0.096536   -0.020766 -0.104055
CCSD(T)=FULL         -0.045771           -0.490858 -0.175720 -0.014323 -0.087455 -0.169628 -0.018337 -0.099092 -0.182722 -0.021634 -0.106619
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) 6-311+G(3df,2p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ daug-cc-pVDZ daug-cc-pVTZ