Hi!

In vwapHourlyBTCUSD.csv file all rows before 1511067600,"2017-11-19 05:00:00" are the same:

1511064000,"2017-11-19 04:00:00",18670.66280423,0
1511060400,"2017-11-19 03:00:00",18670.66280423,0
1511056800,"2017-11-19 02:00:00",18670.66280423,0
1511053200,"2017-11-19 01:00:00",18670.66280423,0
1511049600,"2017-11-19 00:00:00",18670.66280423,0
1511046000,"2017-11-18 23:00:00",18670.66280423,0

till

3650400,"1970-02-12 06:00:00",18670.66280423,0
3448800,"1970-02-09 22:00:00",18670.66280423,0
1756800,"1970-01-21 08:00:00",18670.66280423,0