Table 7. Spheno-occipital synchondrosis closure rate in males (percentage / year) between 9–16 years.

Age group	Age range	Number	Mean rate	SD	Range
9	8.5–9.4	1	7.47	–	–
10	9.5–10.4	5	14.69	10.98	2.40–30.30
11	10.5–11.4	20	23.14	11.46	5.45–46.43
12	11.5–12.4	30	24.61	15.60	3.22–67.00
13	12.5–13.4	36	26.69	11.58	3.24–44.44
14	13.5–14.4	36	22.32	14.14	2.80–54.55
15	14.5–15.4	25	17.12	13.01	2.40–46.15
16	15.5–16.4	6	15.32	13.76	4.40–46.15