Flowchart of the data analysis as described in Sect. 3. The algorithm is applied to each observing epoch individually. The steps inside the dashed block are applied in parallel to each single-polarisation time series of each frequency band. When this block finalises, the algorithm continues to reduce the data, creating total intensity time series and averaging frequency bands to create the three datasets 3, 2, and 3+2 mm (see Sect. 3.2). These datasets then enter the searching algorithm as summarised in the right column of the diagram.