How to separate into different groups?

I have data that is long and it has different groups inside the data, the different groups are separated within the column by spaces. How do I tell matlab that a space means another group. And after how do I add data from each group, not the total from all the groups but from each group?

[Image Analyst]

Too many possible solutions to suggest without your data. Post your data so we can suggest just the one method that is best.

Answer 1

[Megan Mirkhanian]

each group is between the yellow to yellow (space to space). I want to find the total rain, "BBYPrecip" column, but I want to find the sum (total rain) of each group not all of my data.

[Image Analyst]

Since you Accepted your answer, and did not attach any data we can read in (like in a .mat file), we will assume you solved it yourself.

Answer 2

[Megan Mirkhanian]