if ( ! qfePresent && substr(g,0,3) is "QFE" ) {
		rename(g,qfeInHectoPascal);
		qfe=to_string(qnhInHectoPascal,1,4) : dump;
		constant qfeUnits= "hPa" : dump;
		group g : dump; non_alpha na;
		alias qfePresent=one;
}
if (! qnhPresent && substr(g,0,1) is "Q" ) {
		rename(g,qnhInHectoPascal);
		if (is_integer(qnhInHectoPascal,1,4)) {
				qnh=to_string(qnhInHectoPascal,1,4) : dump;
				alias qnhPresent=one;
				constant qnhUnits= "hPa" : dump;
		}
		group g : dump; non_alpha na;
}
if ( ! qnhAPresent && substr(g,0,1) is "A" ) {
		rename(g,qnhInHundrethsOfInchOfMercury);
		#qnh=to_string(qnhInHectoPascal,1,4) : dump;
		#constant qnhUnits= "hundrethsOfInchOfMercury" : dump;
		group g : dump; non_alpha na;
		#alias qnhAPresent=one;
}
if (! qnhPresent && substr(g,0,1) is "Q" ) {
		rename(g,qnhInHectoPascal);
		if (is_integer(qnhInHectoPascal,1,4)) {
				qnh=to_string(qnhInHectoPascal,1,4) : dump;
				alias qnhPresent=one;
				constant qnhUnits= "hPa" : dump;
		}
		group g : dump; non_alpha na;
}