I just discovered that the time series of two rows (see spoiler at the end of this post) are EQUAL, but one of the two is "delayed" by one hour. Maybe there are other (quasi)identical rows, I did not check it.

The question is: is it ok or is it an error?

----- SPOILER---------------------------------------------------------------------------------------------------------------------

____SPOILER____ ID_train_2----4----5----8 e ID_train_5-----4-----4-----2 ___SPOILER___