vsini versus independent frequencies for the sample stars. Open triangles refer to the dominant oscillation mode for each star; the two other symbols represent all other independent frequencies. Filled boxes and open circles refer to γ Dor and hybrid pulsators, respectively. The solid black line shows linear fit to all data points (there are three frequencies between 18 (208.26) and 21 (242.97) d^-1 (μHz) in the δ Sct domain); the red dashed line represents a linear fit to the frequencies in the γ Dor range after removing the δ Sct frequencies.