Median light curves at 1.4 GHz within R_200,1 (t) during cluster merger events for galaxy groups with 10¹³ ≤ M_200,1/M_⊙ < 10¹⁴ (solid red circles) and clusters with M_200,1 ≥ 10¹⁴ M_⊙ (solid blue circles) as a function of time with respect to the core-passage. In each case, thin solid lines correspond to a decile above and below the median value. Best-fitting functions within R_200,1(t) and 2R_200,1(t) are also shown as solid and dashed lines, respectively.