Hi She
It's not unusual to have a couple of countertrend moves in a lengthy trend, check the All Ords chart--it did the same. As long as there's a clear trend I disregard the countertrend rallies, so my fib retracements (intraday basis from the $5.39 high to the 1.39 low) are:
38.2: 2.92
50: 3.39
61.8: 3.86