The total amount of time in one-hundreds of a second that the probe is sure this LCI was down, i.e., the total time the value of wanAal5PvcStatsState was equal to down(3). A value of less than the age of this entry does not necessarily mean that this VPI/VCI was up at some point. It only means the probe was not certain it was down. Note: the sum of wanAal5PvcStatsUpTime and wanAal5PvcStatsDownTime may be less than the age of this entry. In this case, the unaccounted for time is the time the probe was uncertain of the state of this VPI/VCI, i.e., the total time the value of wanAal5PvcStatsState was unknown(3).