I input dollar amounts ($5,000.00-$7,000.00)on a daily basis and sort the data from highest to lowest. Each list can be about 75-100 entries long. How can Excel find areas of congestion within the list? Congestion can be defined as a group of numbers that are separated by no more than $20. The list can have several groups within. The groups or areas of congestion identified can be highlighted or...(another suggestion)

Please advise-Thank you