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Bond Length differences between FULL (all electrons correlated) and FROZEN core

Such as MP2=Frozen and MP2=Full
17 10 27 16 27

For ICl atoms 1 and 2

For ICl (Iodine monochloride)
Bond length differences (full - frozen) in Å. Mouse over a difference for the bond length with full correlation.
Methods with standard basis sets
3-21G 3-21G* 6-311G*
Moller Plesset perturbation MP2=FULL -0.0003 0.0002 0.0040
Coupled Cluster CCSD(T)=FULL -0.0000 0.0003 -0.0008
3-21G 3-21G* 6-311G*