Normalized number fractions for stars with different inclinations. The black solid lines represent stars in phase C that are near equator-on (sini  > 0.4 and Ro < 0.022). The brown dashed lines represent stars in phase C that are near pole-on (sini  < 0.4 and Ro < 0.022). The blue dashed lines represent 130 stars without detectable rotation periods in our sample. From the left to the right panel, the x-axis represents the flaring activity, the maximum flaring amplitude of a star, and the maximum flaring luminosity of a star, respectively.