I'm creating a pie chart from a column where the number of days to resolve an issue could range from 1 to any number. In my chart, I'd like to aggregate the day values to: 1, 2, 3-5, 6-10 and More than 10. My number of days field property is numeric. I've tried creating a calculated column but am having trouble with the formula. I tried an "If" formula with a series but that didn't work. Any suggestions?