Moderate Volatility Timings

I want to trade reversal to mean strategy using Bollinger Bands. Can anyone please help me at what times of the day there is moderate volatility in market for the below pairs? I am looking for hours when market is not totally dead and also not trending a lot.

I am specifically interested in the following pairs:

EURUSD
USDJPY
AUDUSD
EURGBP
GBPUSD
EURJPY