How to set wind direction in StageEditor?

Hi all friends!
I know you can set the wind direction in SE but what mean the numbers between -1 and 359? They are degrees? How could I set a wind from northwest?
Thanks in advance for your answers!
I know you can set the wind direction in SE but what mean the numbers between -1 and 359? They are degrees? How could I set a wind from northwest?
Thanks in advance for your answers!
