pdghist
How the Particle Data Group's
values for fundamental Standard Model parameters have evolved across editions
of the Review of Particle Physics.
Each plot: x = PDG edition year,
y = value with error bars. Independent PDG sources are
overlaid where available, as a cross-check.
See also —
theoretical predictions (Koide-type
sum rules and the Poincaré–Casimir quartic spectrum)
overlaid on the data.
All masses together
Every Standard Model mass on one logarithmic axis. The
line is the PDG value; the shaded band is its uncertainty.
Vertical zoom — show only recent editions
(makes the shrinking modern error bars visible; the choice lives in the URL
so it survives printing):