REN - Gasodutos, SA, as the Natural Gas Transmission System Operator shall prepare an annual report with information on the quality of service, in accordance with the Regulation on Quality of Service (RQS). The objective of this report is to provide detailed information about the continuity of service, quality of natural gas as well as the quality of commercial services. With This information it is intended to contribute to a better understanding of the aspects related to the Quality of Service of the Natural Gas Transmission System.