RMS and 𝒮_ℬ index versus the mean I magnitude in the GC Terzan 5. The green-circled point is the previously known RR Lyrae V3, dark-yellow triangle points are the semiregular variables, orange five-pointed star symbols are the stars selected as candidate variables, blue squares are stars flagged as LPVs in Gaia Data Release 3 (DR3), and the light-yellow five-pointed star symbol is an eclipsing binary candidate. The lower red lines correspond to the fits applied to the data, while the upper red lines are the shifts applied to define the thresholds for variable candidate detection.