meanderings of the sasuraijin.
Unless specified otherwise on a per campaign basis, character generation uses the following method (please see further requirements at the end of this post):
4d6, drop lowest die, generate column of six stats.
Repeat twice more, generating two more columns.
No switching numbers between columns.
Pick best column.
Assign numbers from chosen column to stats as you see fit.
Apply racial / template / etc., adjustments.