set tolerance in vertical eas

Documentation/Examples/vertical_EAS.cc

@@ -184,8 +184,8 @@ int main(int argc, char** argv) {
 
   process::particle_cut::ParticleCut cut{60_GeV};
 
-  process::on_shell_check::OnShellCheck reset_particle_mass(1.e-2,1.e-2);
-  
+  process::on_shell_check::OnShellCheck reset_particle_mass(1.e-3, 1.e-2);
+
   process::energy_loss::EnergyLoss eLoss(showerAxis);
   process::longitudinal_profile::LongitudinalProfile longprof{showerAxis};