Since the leading winds are West-oriented, the Pic du Midi observatory is, most of the time, away from the turbulence trails of the Pyrenees mountains.
(the leading winds; are; West-oriented) (the Pic du Midi observatory; is; most of the time, away from the turbulence trails of the Pyrenees mountains)
the leading winds the Pic du Midi observatory
are is
West-oriented
most of the time, away from the turbulence trails of the Pyrenees mountains