Motorola WiNG 4.4 Reference Manual page 313

The total round-trip delay in seconds. This variable can take on both positive and
Root delay
negative values, depending on the relative time and frequency offsets. The values
that normally appear in this field range from negative values of a few milliseconds
to positive values of several hundred milliseconds.
Displays the nominal error relative to the primary time source in seconds. The
Root Dispersion
values that normally appear in this field range from 0 to several hundred
milliseconds.
Switch Services 5 - 33