Figure S2. Best-fit log-raised cosine distribution of 24 samples (n=100) of mobile particle of the bed at each seismic sensor location. The thicker the line, the greater the number of seismic sensor locations that share the same \(D_{50}\) and \(\sigma_{g}\) values (i.e. Table S2), from a single seismic sensor location sharing the same parameter values (i.e. thin line), up to six seismic sensor locations sharing the same parameter values (i.e. thick line). Note that seismic sensor locations presenting the same \(D_{50}\) and \(\sigma_{g}\)values were estimated based on site-specific and different line-by-number counts.