centWave results for example region 2. centWave results for example region 2. The lower part shows the same extracted ion chromatogram (967.53–967.56 m/z) as in Figure 4 and the detected chromatographic peaks from the centWave algorithm as Gaussian fits. The upper part shows the CWT coefficients on the different scales. A cross marks the scale where the peak was optimally localised. The vertical grey lines show the peak borders which were estimated from the coefficients of this scale.