1.7.2.3	30	-	assay at	
1.7.2.3	37	-	assay at	
1.7.2.3	45	-	-	
1.7.2.3	60	-	for molybdoenzyme, maximal activity remains the same at 80°C	
1.7.2.3	80	-	for tungsten-substituted enzyme, maximal level above