I find what you have presented here to be confusing, but I will make an honest attempt to engage.
Is your issue that you have 4 columns, and you wish to have 2 ?
that you have winglength twice and hang time in seconds also twice , and you would rather have them once each in a longer frame, than the wider frame you seem to be saying that you have?
as a sidenote, I don't see anything that looks like a factor per say. unless perhaps you have decided to encode Wing.Length as a factor rather than as a numeric ?