Phase-folded RV (blue circles), CRX (red circles), and photometric (green circles) data obtained for YZ CMi. Top panel: the left and right vertical axes correspond to RV and CRX, respectively. The best models that simultaneously fit the three datasets are shown as dash-dotted (RVs) and dotted (CRX) lines, and they correspond to the values found in Table 2. The error bars correspond to the quadrature addition between observational uncertainties and the fit jitter parameter for each dataset.