<div style="FONT-FAMILY: Arial; COLOR: rgb(0, 0, 0); FONT-SIZE: 18px"><div>Actually, in practice it's mostly just mb, shortening the mbar. Example: the 500mb map.<br /></div><div> </div><div style="border-top:1px solid #bcbcbc;margin:5px 0px;"></div><span style="font-size:12;font-family:arial;color:#000000;">On 01/27/14, <span>Robert Kirk<isobar@verizon.net></span> wrote:</span> <br /><div style="font-size:12;font-family:arial;color:#000000;"><div style="FONT-FAMILY: Arial; COLOR: rgb(0, 0, 0); FONT-SIZE: 18px"><div>Minor correction... Convention has it that millibars is abbreviated mbar not the plural sounding mbars. Much like you write 15cm not 15cms. <br /></div><div> <br /></div></div><br /></div></div>