I'm plotting blood sugar levels using bins. A sample graph is attached. I would like to determine which patients moved from one bucket to another between two months. For example, you see that the percent of patients in 10-11 went from 31% to 56% from October to November. I would like to plot exactly which patients moved into 10-11 in November and from what October bucket. Additionally, I would like to know what percent of patients moved from say 9-10 in October to 10-11 in November or moved from 11-12 in October to 10-11 in November.