Hi,
Green area consists of:
1) Fibonacci Golden Ratio 62%
2) Fibonacci Extension 127%
3) Middle number 16.500
4) Daily & Weekly EMA200 are around the marked area.
5) 2X AB=CD!
6) Channel projection
7) Let the bullish price action around the green area guides you into the trade!
16.500 is the key level, wait for a smaller timeframe candlestick patterns after the touch. As said let the price action guides you into the trade ;)
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Regards,
Vaido