The document discusses data visualization tools and techniques used for the AirBox citizen science air pollution monitoring project. It describes the AirBox system which collects data from sensors, performs computations, and visualizes the data through various tools. It provides examples of visualizations including device information, comparisons, dashboards, maps, and animations. It also presents case studies showing patterns in air pollution data related to events like pollution coming from China, a religious celebration, wind patterns, and rain. The key lessons are that visualization is important for understanding data, web-based tools are preferred, and challenges around scalability, security, and privacy must be considered.