How do I summarize a large data set based on specifiec parameters. For
example, I have a data set of water level measurements recorded at 1 hour
increments for 1 year. I would like to calculated a daily average water
level for each day. Is there a faster way to do this than manually selected
all of the recordings within each day and individually calculating daily
means. In other words, is there a formula I can use that tells excel to
calculated means for each day?