Welcome to the self-paced course on data handling and interpretation for the monitoring of persistent organic pollutants (POPs) under the Stockholm Convention. The management and interpretation of monitoring data is a critical step towards the understanding and usage of the information. The data handling and interpretation course is designed to assist Parties of the Stockholm Convention and technicians involved in the POPs monitoring process and in the usage of these environmental monitoring results. The interpretation of monitoring data is part of the handling or processing of data resulting from environmental monitoring. Therefore, in this training we will first discuss environmental monitoring and data handling and then we will address the interpretation of the data. The content of this course is provided by UNEP with support from Basel Convention Coordinating Centre-Stockholm Convention RegionalCentre in Uruguay (BCRC-SCRC-Uruguay), and the e-course is developed by Stockholm Convention Regional Centre for Capacity-building and the Transfer of Technology in Asia and the Pacific (SCRC China).