Rotation-activity diagram for NGC 2516 with the fractional X-ray luminosity log L_X/L_bol plotted against the solar-scaled Rossby number (Ro/Ro_⊙). The orange line shows a moving average for a window of Δ log Ro/Ro_⊙ = 0.2. Members with identified flares in their light curves are marked with blue x-shaped symbols, and members with two potential optical counterparts with blue pluses. The two canonical regimes (of saturated and unsaturated stars) are obvious. However, a gradual decline of the X-ray activity in the less densely populated region between the flat, saturated regime and the steeply declining unsaturated regime is also noticeable. Stars rightward of Ro/Ro_⊙ = 0.25 are of early F-type, and are only displayed here for completeness.