-option "lower" l "1,2,3,4: Lower threshold value" double no default="0"
-option "upper" u "1,2,3,4: Upper threshold value" double no default="1"
+option "lower" l "1,2,3,4: Lower threshold value" double no default="310"
+option "upper" u "1,2,3,4: Upper threshold value" double no default="4000"