IV.A.4. (XIV.F.) 
index  Species  CAS number  Name  Relative experimental enthalpy (kJ mol^{1})  sketch 

a  C_{10}H_{8}  91203  naphthalene  
b  C_{10}H_{8}  275514  Azulene 
631G*  631+G**  TZVP  ccpVTZ  

hartree fock  HF  0.0 a 173.2 b 
0.0 a 181.7 b 

density functional  B3LYP  0.0 a 139.9 b 
0.0 a 137.4 b 
0.0 a 139.5 b 

PBE1PBE  0.0 a 144.1 b 

TPSSh  0.0 a 132.6 b 

Moller Plesset perturbation  MP2  0.0 a 158.6 b 
0.0 a 145.1 b 

MP3=FULL  0.0 a 161.9 b 
0.0 a 167.1 b 

B2PLYP  0.0 a 140.6 b 
See section III.C.1 List or set vibrational scaling factors
to change the scale factors used here.
See section III.C.2
Calculate a vibrational scaling factor for a given set of molecules
to determine the least squares best scaling factor.