Not sure where this goes but lets try here. I have the sum of values for each day of the week. The sum changes daily but the range is always 7 days at a time. So lets say Sun-Sat = 750, then Mon-Sun = 825, then Tue-Mon = 678, then Wed-Tue = 913. Sat and Sun could very well be zero but no guarantee. Is there a way to determine daily values over time?