This is nonsense. When you show the 6 min chart, you work with 1,2, or 3 minute data which ranges back as far as the 3 minute chart ranges back. When you use the 5 min chart, you get 5 min data, and 200.000 bars on 5 minute bars range farther back than 200.000 bars on 3 min bars. Thats the whole solution, I think.
