  We present a global analysis of solar, atmospheric, reactor and accelerator
neutrino data in the framework of three-neutrino oscillations based on data
available in summer 2014. We provide the allowed ranges of the six oscillation
parameters and show that their determination is stable with respect to
uncertainties related to reactor neutrino and solar neutrino flux predictions.
We find that the maximal possible value of the Jarlskog invariant in the lepton
sector is $0.0329 \pm 0.0009$ ($\pm 0.0027$) at the $1\sigma$ ($3\sigma$) level
and we use leptonic unitarity triangles to illustrate the ability of global
oscillation data to obtain information on CP violation. We discuss "tendencies
and tensions" of the global fit related to the octant of $\theta_{23}$ as well
as the CP violating phase $\delta_\mathrm{CP}$. The favored values of
$\delta_\mathrm{CP}$ are around $3\pi/2$ while values around $\pi/2$ are
disfavored at about $\Delta\chi^2 \simeq 6$. We comment on the non-trivial task
to assign a confidence level to this $\Delta\chi^2$ value by performing a Monte
Carlo study of T2K data.
