Information on mass chains and nuclides available on this website:

WWW TUNL

Mass of ¹⁵F: A calculation using an isobaric mass formula predicts that ¹⁵F is unstable with respect to proton emission by 2.32 MeV: the mass excess of ¹⁵F is then 17.62 MeV (KE66C). See also (MU57A, BA61F).