Hi, I'm trying to copy the values from every third cell into a new column. I've looked at examples and tried both the INDEX and MOD functions to no avail. Please help.
https://drive.google.com/file/d/0B-bGMjKaL94hOXIxSHBDODhPZjg/view?usp=sharing
https://drive.google.com/file/d/0B-bGMjKaL94hOXIxSHBDODhPZjg/view?usp=sharing