width frequency 6.875 32 7.125 103 7.375 239 7.625 624 7.875 1187 8.125 1650 8.375 1883 8.625 1930 8.875 1638 9.125 1130 9.375 737 9.625 427 9.875 221 10.125 110 10.375 57 10.625 32