Data file for G4NuclideTable.
Properties of each state are introduced from Evaluated Nuclear Structure Data File (ENSDF) 

An example of state

6   14          6728.2  0      0.09521787    6    4.12143936e-27
and format of each enetry is 
1:Z
2:A
3:Excitation energy [keV]
4: String for floating levels -,+X,+Y,+Z,+U,+V,+W,.. 
   - means not floating level
5:Mean life time [ns]
6:Spin [h_bar/2]
7:Dipole magnetic moment [joule/tesla]

