This read-only enumerated object reports the accuracy of this clock, ranging from nSec25(1) through nSec250(3), microsecond and millisecond tiers, up to sec10(17), gT10S(18, greater than 10 seconds), or accUnknown(19), used in best-master-clock determination, defaulting to accUnknown. An admin reads this to assess how precise a candidate clock's timing actually is before trusting it as a master. For example, a clock reporting uSec1(4) is far more precise than one reporting mSec100(14), and would be preferred in master selection.