I'm currently trying to bin a large CTD data file and I know I must use a for loop to create the average values, but I'm not sure how to implement it. For example, I have about 100 lines of data for depth "2" that are 2.3455, 2.3434, 2.4532 and so on. I have this for depth 2 meters - 751 meters. I would like to average all the values together that begin with the same number (all of the "2"s, "3"s, etc.). Thanks in advance!