deletions | additions       diff --git a/res_region.md b/res_region.md  index 5c707f1..43ae2a8 100644  --- a/res_region.md  +++ b/res_region.md 
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The original algorith works by calculating a wavelet transform of the signal for increasing window lengths (Figure \ref{fig:regs} B). Ridge lines along local maxima on the surface correspond to peaks if they satisfy certain criteria (length of the ridge, SNR, etc., see Du et al.\cite{Du_2006} for details) In our extension, the width of the peak is obtained from finding the first maximum of the wavelet transform values along the ridge line (Figure \ref{fig:regs}C). The left and right edges of the region are taken as \([peak_{center} - 1.5\times width, peak_{center}+2\times width]\)   Region estimationis  provides a ranked list of potential event regions. The rank of a region indicates how many regions having a lower peak SNR overlap with it. For example, region 1 and 3 on Figure \ref{fig:regs}D have rank 3, because neither overlap with a region having a lower peak SNR. Region 2 has a rank of 2 as it overlaps with region 3 which has a lower peak SNR. Ranking is necessary to ensure overlapping signals are correctly fitted in the fitting stage.