if (substr(g,0,3) is "FEW" || substr(g,0,3) is "SCT" ||
    substr(g,0,3) is "BKN" || substr(g,0,3) is "OVC") {

    rename(g,clouds1Trend4);
    group g : dump; non_alpha na;
		cloudsAbbreviation1Trend4=to_string(clouds1Trend4,0,3);
		cloudsCode1Trend4=dict_search("metar/clouds.table",cloudsAbbreviation1Trend4,1);
		cloudsTitle1Trend4=dict_search("metar/clouds.table",cloudsAbbreviation1Trend4,2) : string_type;
		cloudsBaseCoded1Trend4=to_integer(clouds1Trend4,3,3);
		meta cloudsBase1Trend4 evaluate(cloudsBaseCoded1Trend4 * 100 );
    if (substr(g,0,3) is "FEW" || substr(g,0,3) is "SCT" ||
        substr(g,0,3) is "BKN" || substr(g,0,3) is "OVC") {
          rename(g,clouds2Trend4);
          group g : dump; non_alpha na;
				  cloudsAbbreviation2Trend4=to_string(clouds2Trend4,0,3);
		      cloudsCode2Trend4=dict_search("metar/clouds.table",cloudsAbbreviation2Trend4,1);
	      	cloudsTitle2Trend4=dict_search("metar/clouds.table",cloudsAbbreviation2Trend4,2) : string_type;
		      cloudsBaseCoded2Trend4=to_integer(clouds2Trend4,3,3);
				  meta cloudsBase2Trend4 evaluate(cloudsBaseCoded2Trend4 * 100 );
    }
    if (substr(g,0,3) is "FEW" || substr(g,0,3) is "SCT" ||
        substr(g,0,3) is "BKN" || substr(g,0,3) is "OVC") {
          rename(g,clouds3Trend4);
          group g : dump; non_alpha na;
				  cloudsAbbreviation3Trend4=to_string(clouds3Trend4,0,3);
		      cloudsCode3Trend4=dict_search("metar/clouds.table",cloudsAbbreviation3Trend4,1);
	      	cloudsTitle3Trend4=dict_search("metar/clouds.table",cloudsAbbreviation3Trend4,2) : string_type;
		      cloudsBaseCoded3Trend4=to_integer(clouds3Trend4,3,3);
				  meta cloudsBase3Trend4 evaluate(cloudsBaseCoded3Trend4 * 100 );
    }
    if (substr(g,0,3) is "FEW" || substr(g,0,3) is "SCT" ||
        substr(g,0,3) is "BKN" || substr(g,0,3) is "OVC") {
          rename(g,clouds4Trend4);
          group g : dump; non_alpha na;
				  cloudsAbbreviation4Trend4=to_string(clouds4Trend4,0,3);
		      cloudsCode4Trend4=dict_search("metar/clouds.table",cloudsAbbreviation4Trend4,1);
	      	cloudsTitle4Trend4=dict_search("metar/clouds.table",cloudsAbbreviation4Trend4,2) : string_type;
		      cloudsBaseCoded4Trend4=to_integer(clouds4Trend4,3,3);
				  meta cloudsBase4Trend4 evaluate(cloudsBaseCoded4Trend4 * 100 );
    }
} else {
		if ( g is "SKC"  || g is "CLR" ) {
				rename(g,skyClearTrend4);
				group g : dump; non_alpha na;
		} else {
				if ( substr(g,0,2) is "VV" ) {
						rename(g,verticalVisibilityTrend4);
						group g : dump; non_alpha na;
				}
				if ( g is "NSC" ) {
						rename(g,noSignificantCloudsTrend4);
						group g : dump; non_alpha na;
				}
				if ( g is "NCD" ) {
						rename(g,noCloudsDetectedTrend4);
						group g : dump; non_alpha na;
				}
		}
}