The Nuclear Data Sheets are current and are published monthly. They are devoted to compilation and evaluations of experimental and theoretical results in Nuclear Physics. The journal is mostly produced from Evaluated Nuclear Structure Data File (ENSDF), a computer file maintained by the US National Nuclear Data Center http://www.nndc.bnl.gov 
Nuclear Structure Data: Evaluated nuclear structure data for A>20. (Data for A<21 are also contained in ENSDF but published elsewhere.) The evaluations include the best experimental results for various radioactive decays and nuclear reaction studies. The adopted nuclear properties include the following: 
• Level schemes and excitation energies 
• Half-life, decay modes 
• Spin-parity values and their bases 
• Magnetic dipole moments 
• Electric quadrupole moments 
• Disintegration energies 
• Radiations 
• Transition probabilities 
• Band structure 
Decay schemes, level schemes, and isobaric chains are displayed.