Ratios between the fractions of active stars for different evolutionary stages for the different activity indicators used in this study (written on the x-axis). LM and IM stars are represented in blue and in orange, respectively. Horizontal dashed lines in bold indicate a ratio of 1, while the other horizontal dashed lines indicate ratios of 2 and 3. Left: Ratios between the low RGB (ν_max ≥ 100 μHz) and the medium RGB (ν_max < 100 μHz). Right: Ratios between the HB and the medium RGB. For RGs with detected P_rot, we indicate in addition the ratios obtained for active LM (green cross) and IM (magenta cross) stars when considering stars across over the whole RGB without discriminating between the lower and medium RGB.