CASE WHEN "%CH201%" = "<10" AND "%CH202%" = "<10" THEN "<30"
     WHEN "%CH201%" = "<10" AND "%CH202%" <> "" THEN "<30" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = "<10" THEN "50"    
     WHEN "%CH201%" = "10" AND "%CH202%" = "10" THEN "100" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = "50" THEN "20" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = "100" THEN "10" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = "200" THEN "5" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = "300" THEN "3" 
	 WHEN "%CH201%" = "10" AND "%CH202%" = ">300" THEN "<30" 
	 WHEN "%CH201%" = "30" AND "%CH202%" = "<10" THEN "150" 
	 WHEN "%CH201%" = "30" AND "%CH202%" = "10" THEN "300" 
	 WHEN "%CH201%" = "30" AND "%CH202%" = "50" THEN "60" 
	 WHEN "%CH201%" = "30" AND "%CH202%" = "100" THEN "30"
	 WHEN "%CH201%" = "30" AND "%CH202%" = "200" THEN "15"
	 WHEN "%CH201%" = "30" AND "%CH202%" = "300" THEN "10"
	 WHEN "%CH201%" = "30" AND "%CH202%" = ">300" THEN "<30"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "<10" THEN ">300"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "10" THEN ">300"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "50" THEN "160"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "100" THEN "80"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "200" THEN "40"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "300" THEN "27"
	 WHEN "%CH201%" = "80" AND "%CH202%" = "<30" THEN "<30"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "<10" THEN ">300"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "10" THEN ">300"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "50" THEN "300"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "100" THEN "150"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "200" THEN "75"
	 WHEN "%CH201%" = "150" AND "%CH202%" = "300" THEN "50"
	 WHEN "%CH201%" = "150" AND "%CH202%" = ">300" THEN "<30"
	 WHEN "%CH201%" = ">150" AND "%CH202%" <> "" THEN ">300"
 ELSE "N/A" END