Understanding a term on a commercial property Income Statement

[Howie Baker]

I have received an income statement on an apartment building I am looking at after requesting the trailing 12 months Income/Expense statement and rent rolls.  All they gave me was for October, 2018, but it does have a column that is described as "Year to Month End".  Since this is October does that mean this is for the last ten months only or is it for a full year from October 2017 to October 2018.  What is the most common usage as I have been told different things by the brokers I am receiving the information from.

Thanks in advance for the help!

Howie