I don't know. But some of these personal examples don't even seem possible. Like growing 8'' in 3 months doesn't seem physically possible. Even 11'' inches in an entire year seems pretty impossible.
A guy from my high school grew from ~5'9 to 6'6 in just over a year from age 16 to 17.
My little brother just grew 7 inches in a year from turning 12 to turning 13, 5ft to 5ft7 in a year...
5ft age 12 and 0 days is ~70th centile.
5ft7 age 13 and 0 days is ~95th centile.
My other younger brother grew about the same over the same age, from ~5ft2 to ~5ft9 then just grew an inch a year for the next 6 years.
They are the three biggest growth spurts I have seen from people close to me.
But 11 inches in a year is crazy!