Center velocity represents the speed of movement of the center of gravity of the body. Near the maximum value, the faster the center of the body moves, the closer to the minimum value, the slower the center of the body moves. Specifically, a peak value of 1 corresponds to actions like jumping, 0.6 to jumps within specific actions like ballet jumps or cartwheels, 0.4 to sitting, and 0.2 to walking. 

To find the local maxima, we identify the ranges where the values reach a peak within the dataset. A local maximum is a point where the value is higher than its neighboring values. This indicates periods of high activity or dynamic movement. The detection is based on a threshold percentage (e.g., 80% of the maximum value) to focus on the most significant peaks. The output lists the frame ranges where these peaks occur and their respective values.