Stokes I dynamic spectrum of V530 Per, after subtraction of the averaged Stokes I profile. From left to right: observations, DI model with χ² = 0.55 including both bright dark spots, model residuals. The two additional panels on the right show our model with χ² = 0.65 and dark spots only, and the model residual. The vertical, black, dashed lines mark the ± v sin i limit. The portion above the solid, horizontal red lines represents data from 05 Dec. 2006, while the lower part represents data taken on 29 Nov. 2006.