Example of declustering method A (DCM-A) being applied to the time series of |E| for the Muonio station’s latitude between 11 October 2016 and 07 November 2016. The gray shaded areas indicate clusters of exceedances over the 99.0th percentile (P99), while the dark gray shaded areas indicate clusters of exceedances over the 99.7th percentile (P99.7). Both are separated by at least three days. The horizontal blue and orange dashed lines correspond to the thresholds u = P99 and u = P99.7, respectively. The blue (blue and orange) points are the maximum exceedance inside each gray (dark gray) cluster.