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

For GaH+ (Gallium monohydride cation)

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 -0.001465 -0.002908 -0.008986 -0.012243 -0.022486 -0.023158 -0.023266 -0.406654 -0.407621 -0.072501 -0.443186 -0.141594 -0.007293 -0.048514 -0.078415 -0.008896 -0.051005 -0.082252 -0.009442 -0.052506
MP3=FULL         -0.023060   -0.023808         -0.108444 -0.006467 -0.039591            
MP4=FULL   -0.002856     -0.024767       -0.396122       -0.007462 -0.049429   -0.009073 -0.051764      
B2PLYP=FULL -0.000836 -0.000926 -0.002928 -0.003996 -0.007885 -0.008078 -0.008111 -0.124908 -0.125178 -0.024792 -0.136109 -0.043097 -0.002418 -0.015134   -0.002902 -0.015838   -0.003068 -0.016305
Quadratic configuration interaction QCISD(T)=FULL         -0.025042           -0.408308   -0.007247 -0.045251   -0.008761 -0.047326   -0.009281 -0.048636
QCISD(TQ)=FULL             -0.350146               -0.067362          
Coupled Cluster CCSD=FULL         -0.024106         -0.071105 -0.400302 -0.120893 -0.006786 -0.042906 -0.067221 -0.008206 -0.044931 -0.070269 -0.008694 -0.046211
CCSD(T)=FULL         -0.024998           -0.407657 -0.123098 -0.007217 -0.044995 -0.069714 -0.008724 -0.047067 -0.072787 -0.009242 -0.048376
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