Press Shift + 6 to auto-detect peaks using these settings.
peakStartSlope: how steep the slope must be to call a peak start.
Once derivative goes < 0 => apex is reached.
peakEndSlope: how negative the slope can stay before we say the peak is done.
minSignalAboveBaseline: how close to baseline to consider the tail done.
minPeakArea: if the integrated area is below this, ignore the peak.