(Comment: New evidence suggests that a range of between 7,000 - 8,500 bolers were produced overall.)
[Xusuusnow: Qiyaaso lasameeyey waxaa lagu ogaadey in bini'aadamku wada-hadalka caadi ahaan ay u adeegsadaan uu yahay rakaad u dhexeeya 200 Hz ilaa 8,000 Hz (8 kHz).