Level energy(keV) Spin & Parity ---------------------------------------- ground stateMass (The Ame2012 atomic mass evaluation (II) by M.Wang, G.Audi, A.H.Wapstra, F.G.Kondev, M.MacCormick, X.Xu, and B.Pfeiffer Chinese Physics C36 p. 1603-2014, December 2012)
103.936477804 ± 0.000131408 (amu) [mass excess = -59170.544 ± 122.406 (keV) ]Evaluated Data Libraries
Links to the libraries.