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

For ZnF (Zinc monofluoride)

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) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ
Moller Plesset perturbation MP2=FULL -0.004836 -0.057759 -0.057759 -0.055547 -0.060344 -0.060344 -0.127630 -0.438736 -0.438736 -0.096132 -0.238124 -0.204954 -0.451622 -0.594615 -0.224156 -0.463522 -0.600937
MP3=FULL         -0.043099   -0.165772       -0.164207 -0.146152 -0.370063        
MP4=FULL   -0.051365     -0.057574       -0.418650     -0.197081 -0.440767   -0.217926 -0.455005  
B2PLYP=FULL 0.015506 -0.017362 -0.017362 -0.017008 -0.018501 -0.018501 -0.038788 -0.129426 -0.129426 -0.029051 -0.071998 -0.062782 -0.133868   -0.068327 -0.137302  
Quadratic configuration interaction QCISD(T)=FULL         -0.051367             -0.173961 -0.409493   -0.193301 -0.422756  
QCISD(TQ)=FULL         -0.049814   -0.104156         -0.171240 -0.407026   -0.190211 -0.429934  
Coupled Cluster CCSD=FULL         -0.049330         -0.086006 -0.196207 -0.170507 -0.404871 -0.544608 -0.189611 -0.417442 -0.550929
CCSD(T)=FULL         -0.051262           -0.197982 -0.173820 -0.409345 -0.551650 -0.193109 -0.422566 -0.558303
STO-3G 3-21G 3-21G* 6-31G 6-31G* 6-31G** 6-31+G** 6-311G* 6-311G** 6-31G(2df,p) TZVP cc-pVDZ cc-pVTZ cc-pVQZ aug-cc-pVDZ aug-cc-pVTZ aug-cc-pVQZ