What doest factor and back stand for ?

Does it change depending on the platforms time ? Becouse different platforms use different time zones, and I just ran it on my InterbankTrader , and ot seems to be a little displaced. The Lines seems to be close to turning points, but a little outside them everywhere. I think maybe it is becouse the time difference or something like that ?

As I understand the where the hights should be are marked with blue lines ( check the image here , aren`t they ?

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