Inconsistent tick data

Hi,

I'm using the API to fetch the tick data of EURUSD from 1581897600000 to 1581901199999, that is from 2020-02-17T00:00:00.000Z to 2020-02-17T00:59:59.999Z.

I get from the server that the first tick happens at 2020-02-17T00:00:00.947Z, with value $1.08413. 

Although, the hourly bar in cTrader tells me that the lower value is $1.08412, despite both ASK and BID shows $1.08413 in the Tick API, as well as in the Bar API.

Is the data used in cTrader different from the one provided in the API? I am getting many bars with inconsistent pip values.

Many thanks,

Douglas.