Ineligible: That's very true. I now see, having checked it as I should have the first time, that Donk (who I reckon was measuring carefully) reports growing 1/2" in two weeks, which is the same rate as 1" in a month, though perhaps it wasn't as big an increase proportionately.

A lot of people here have reported that they thought they were averageish and then measured later and found they were much bigger and now definitely not average. It seems a common experience.