Includes 1) all persons present in the Palestinian territory on the reference date, irrespective of nationality, purpose of stay and place of residence in the Palestinian territory. (2) all Palestinians temporarily living abroad (for less than one year prior to the night of the reference date) and who have a usual place of residence in the Palestinian territory (these persons are enumerated as part of their households). (3) all Palestinians studying abroad irrespective of the study period and the period of stay abroad and all Palestinian detainees in the Israeli jails regardless of the detention period.