This disparity happens when a date range is selected that does not include daily KDP data. KDP only provides authors 90 days of daily data. Days 91+ going backward are all summed up in monthly totals by them. Consequently, if you choose date ranges that do not include the daily data you'll get incomplete data. If the date range you choose spans a month or more then you'll see correct data for those months. Of course, moving forward ReaderLinks will capture all daily data for you if you use the Rea