The deviation is a false break of the structure where the price takes liquidity. Therefore once the price breaks out of the range, we will wait for it to re-enter so we can trade it.

I do not take all deviations as valid, I repeat, I DON’T take them as valid. That doesn't mean it's right or wrong. It's just my way of operating.

For this I use fibonacci tool. I consider a deviation of 0.1 as valid. Its marked from one end of the range to the other.

Also, we can search for some POI outside the range which will be our approximate deviation

After we have a deviation at one end, we are going to have it at the other end. Therefore, if the first deviation was 0.1, the second will also be 0.1.

My common deviations are 0.1; 0.236; 0.382; 0.5 and 0.618. We configure this like this in trading view