Boiling point

At lower pressures (at high altitudes), the boiling point will be perhaps a couple of degrees lower...The melting point is lowered by 1.85 degrees Celsius if 29.2 grams of salt (NaCl) are dissolved in each Kg of water...The boiling point is raised by 0.5 degrees Celsius for water with 29.2 grams of salt dissolved in each kg of water...

(van.physics.illinois.edu)