AA 級 是有出生證明之類，要證明他錯不容易。

http://www.astro.com/astro-databank/Help:RR


AA Accurate accurate Data as recorded by the family or state. This includes BC (birth certificate), and BR (birth record), that which is not an official document but a quote of the birth record from the Registrar or Bureau of Records, the baptismal certificate, family Bible, or baby book. These data reflect the best available accuracy.
Taeger data groups: 1*,1F