In this section of the verbose-mode output the endtime is the timepoint at which this particular instance of the bond between these two atoms was broken. The lifetime is the duration of this particular instance of the hydrogen bond or bridge.
Thus the information in your second and third rows means that there was a hydrogen bond between these atoms in the two intervals (10,150) and (160,280).

You are probably better off looking at the more compact summary information at the end of the output.

Lennart Nilsson
Karolinska Institutet
Stockholm, Sweden