  We reanalyze the radial (n) and angular-momentum (J) Regge trajectories for
all light-quark states with baryon number zero listed in the 2011 edition of
the Particle Data Tables. The parameters of the trajectories are obtained with
linear regression, with weight of each resonance inversely proportional to its
half-width squared, $(\Gamma/2)^2$. That way we are side-stepping possible
channel-dependent and model-dependent extractions of the resonance parameters
and are able to undertake an error analysis. The method complies to the fact
that the pole position of the resonance is typically shifted from
channel-dependent extractions by $\sim\Gamma/2$. This is also a feature of the
large-$N_c$ limit of QCD, where the masses change by $ \Gamma/2$ when evolving
from $N_c=3$ to $N_c=\infty$. Our value for the slope of the radial Regge
trajectories is $a=1.35(4) GeV^2$. We discuss the fundamental issue whether the
masses of the light-quark non-strange states fit into a universal pattern
$M_{nJ}^2 = a(n+J) +b$, as suggested by Afonin, and also predicted by some
holographic models. Our joint linear-regression analysis in the $(n,J,M^2)$
Regge planes indicates, at a statistically significant level of 4.5 standard
deviations, that the slopes of the radial Regge trajectories are larger from
the angular-momentum slopes. Thus no strict universality of slopes occurs in
the light non-strange meson spectra.
