Left: log P_rot/P_cyc vs. log Ro^-1. Our stars are marked black if their cycles are graded “fair” or better and white if their cycles are “poor”. Triangles denote stars with cycles labelled “long”, while diamonds are used for the rest of the sample stars. Grey points denote reference data from Saar & Brandenburg (1999). Vertical dashed lines connect the long and short cycles found on the stars HD 63433, HD 82443, and HD 116956. The curved dashed line is a Gaussian process fit to the activity branches apart from the inactive branch, approximately located above the light grey dashed line. Approximate ranges of the active, transitional and superactive branches are denoted by the horizontal arrows labelled “A”, “T” and “S”. Right: same as on the left but for log P_rot/P_cyc vs. . Stars in our sample that have detected active longitudes are circled in the plot. The grey vertical dashed line marks the approximate divide between the active stars with active longitudes and the less active ones without them. The scale for log P_rot/P_cyc is identical in both panels.