Column Repeat statistics

[thearchitect]

Hi, everyone

I would like to ask: what is the largest number of times a column repeats itself that you have seen? and out of how many rounds did you see it happen?
PS: on a real table, not a simulated game.

If anyone can help me convince myself that there will [ALMOST] never be a column repeating itself more then 7 times, then I think I'll be able to pay for school

Thank you, all!

Cheers