As you can see on the chart's bottom, when green line goes below 0, the following movement is a strong long one.
If we look up to this pattern on different timeframes, we could see the same.
The indicator's name is konkorde. But this indicator is not enogh to analyze.
You can use a oscilator as slow stochastic to have more information
Timeframe is 150min because I think is a middle point betweeen short term and medium term trading.