Don't Know Scout,
Steam is also another form of water where H & O are still in combination
an low pressure can create a form of vaporization. You tell me.
Barometric Pressure variations are do to water vapors in solution with
Air and water(H2O) is a Vapor(gas).
I don't know or do I give a ****.
Ole Thom
http://community.webtv.net/tassail/ThomPage