How to find peaks and periods?

1. How do you calculate peaks?
2. How do you find peaks in time series?
3. How do I count peaks in Excel?

How do you calculate peaks?

Peak area calculation. A peak consists of a number of counts in adjacent channels. In principle, therefore, measurement of peak area is simply the summation of a number of channel contents over all channels within the peak, G. Subtract the underlying continuum, B to create a net area count (A) instead of the gross area ...

How do you find peaks in time series?

Find the start and the end by comparing the current value to the median, i.e. if the current value is smaller than the median but the next one is bigger, a peak starts. The opposite is valid for the end, if the current value is higher than the median but the next one is smaller, it's the end.

How do I count peaks in Excel?

Select the cell - C3 which is adjacent to cell B3 (the second cell value of your list excluding the header), enter formula =IF(AND(B3>B2,B3>B4), "Peak","") into the Formula Bar and press the Enter key. Then drag the Fill Handle down to mark all peaks as below screenshot shown.