Distribution in T_eff (left column), number of detected (independent) frequencies (middle column) and highest amplitude (ppm, in logarithmic scale) (right column), for the three groups of A-F type stars: δ Sct stars (top; dark grey), hybrid stars (middle; middle grey), and γ Dor stars (bottom; light grey). The number of stars belonging to each bin (N) is indicated on the Y-axis.