The index locations of all peaks or valleys detected in the current block of data.
Because the peak detection algorithm uses a quadratic fit to find the peaks, it actually interpolates between the data points. Therefore, the indexes are not integers. In other words, the peaks found are not necessarily actual points in the input data but may be at fractions of an index and at amplitudes not found in the input array. To view the locations in terms of time, use the following equation:
Time Locations[i] = t0 + dt*Locations[i]