Hello cardiff I compile my data for this at steemd.com everyday . I try to do it around the same time each day . I put it on a spreadsheet I have put formulas in the spreadsheet to calculate several numbers I'm watching . I do a weekly data report with much more detail you can view my latest report here .
https://steemit.com/steemit/@me-tarzan/9-22-2016-steemit-weekly-data-report-9-22-2016