This read-only object records the index value of p2mpTlValueIndex identifying exactly which entry in the p2mpTlDataTable was the sample that caused the stop trigger to fire and end this timeline capture. It lets an admin pinpoint the precise moment within the captured data where the triggering event occurred, rather than having to guess from the raw samples. For example, an engineer analyzing a timeline capture triggered by a signal threshold breach would use p2mpTlTriggerLoc to jump directly to the sample where the breach happened.