Main construction work for the Florentine “Nodo di Firenze” high-speed railway hub started in 2010. The tunnel boring machine (TBM) transitions through extremely variable geological terrain and excavations along the entire length of the hub take place below water level.The 6.5 km long underground railway line is being built underneath the city’s critical infrastructure components and historic buildings. Due to the geological complexity of the area, settlements can be expected following tunnel excavation. Hence, this urban tunnelling project requires special supervisory measures. It was necessary to identify potential hazards at a very early stage and to mitigate their impact. The client required a comprehensive analysis of the monitoring data at short notice – especially during the tunnel advance stages, including online post-processing and the interpretation of all automated and manual measurements. These challenges were met by using the proven swissMon core technology for web-based deformation monitoring. This White Paper outlines how the workflow for manual measurements was optimised using the innovative tManual software. The software enables on-site personnel to safely upload validated measurements to swissMon from any location at any time. Illustrating the monitoring workflow, this White Paper focuses on the data management needed to provide data for online post-processing. The real-time monitoring data and the post-processing procedures that are described in a second paper enabled project engineers to make informed decisions.