The 15 second epochs csv file summarises the events which occur in each 15 second time slice.
| Column Heading | Description |
|---|---|
| Time | Date and time encoded as a floating point number, The integer part of number represents the date. The decimal portion represents the time. (Full details at: http://support.microsoft.com/kb/210276) To view the time in Excel, follow this these instructions |
| Step Count | Number of steps counted in the 15 second period |
| Activity Score | Activity score in MET.s in the 15 second period |
| Sedentary Time | Number of seconds sedentary in the 15 second period |
| Upright Time | Number of seconds upright in the 15 second period (Note: this is the time spent standing and stepping) |
| Stepping Time | Number of seconds stepping in the 15 second period (Note: this time is also included in the upright time) |
| Cycling Time | Number of seconds cycling in the 15 second period (Note: this time is also included in the upright time) |
| Primary Lying Time | (CREA algorithm only) Number of seconds of primary lying in the 15 second period |
| Secondary Lying Time | (CREA algorithm only) Number of seconds of secondary lying in the 15 second period |
| Non Wear Time | (CREA algorithm only) Number of seconds of non-wear in the 15 second period |
| Seated Transport Time | Number of seconds in seated transport in the 15 second period (Note: this time is included in the sedentary time) |
| Sedentary to Upright Movements | Number of sit to stands in the 15 second period |
| Upright to Sedentary Movements | Number of stand to sits in the 15 second period |
| Sum(abs(dChannel1)) | Sum of the absolute sample to sample differences on the x axis in the 15 second period |
| Sum(abs(dChannel2)) | Sum of the absolute sample to sample differences on the y axis in the 15 second period |
| Sum(abs(dChannel3)) | Sum of the absolute sample to sample differences on the z axis in the 15 second period |