In addition to a TAC value, you will also see the Temperature column, which is the user’s skin temperature. Data in the ‘‘Motion’ column represents the average acceleration magnitude of the Skyn in units of g’s. It is important to note that this data is not a measurement of the physical forward motion of the body, it is the instantaneous speed that the wrist/Skyn is moving at that single given data point. Non-zero readings could indicate when the user is performing a physical activity, and/or moving their arm quickly.