No. | Date | Century | Number in Khānghāhs | Number in other centers | Total |
1 | 610 - 698 | 7 | 2 | - | 2 |
2 | 733 - 788 | 8 | 9 | 2 | 11 |
3 | 831 - 896 | 9 | 12 | 8 | 20 |
4 | 903 - 971 | 10 | 2 | 5 | 7 |
5 | 1011 - 1074 | 11 | 2 | 8 | 10 |
6 | 1191 - 1198 | 12 | 5 | 1 | 6 |
7 | 1277 - 1291 | 13 | - | 4 | 4 |
8 | total | 7 - 13 | 32 | 38 | 60 |