Relation between the number of radial velocity points available for the analysis and the upper limit (95.4% confidence interval) on the trojan mass for each of the 46 systems. In color code we represent the mean precision of all RV measurements. The α 95.4% confidence interval is transformed into L₄ (circles) and L₅ (pentagons) mass values assuming m_t ≪ m_p, small eccentricities, and trojans close to the Lagrangian points.