Correct error in update

@@ -11,10 +11,6 @@ ptrn:
       rdf:type owl:Ontology ;
       owl:versionInfo "Created with TopBraid Composer"^^xsd:string .
 
-<http://data.posccaesar.org/ptrn/2Days>
-      rdf:type ptrn:ISO15926-4PeriodInTime ;
-      rdfs:label "Days"^^xsd:string .
-
 ptrn:Acceleration
       rdf:type <http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#SinglePropertyDimension> , owl:Class ;
       rdfs:label "Acceleration"^^xsd:string ;
@@ -1264,6 +1260,10 @@ ptrn:InletFluidStreamClass
       rdfs:label "Inlet fluid stream class"^^xsd:string ;
       rdfs:subClassOf ptrn:ISO15926-4ClassOfClassOfIndividual .
 
+ptrn:Lag2Days
+      rdf:type ptrn:ISO15926-4PeriodInTime ;
+      rdfs:label "Lag 2 Days"^^xsd:string .
+
 ptrn:LifecycleWholePart
       rdf:type owl:Class , <http://rds.posccaesar.org/2008/02/OWL/ISO-15926-2_2003#ClassOfIndividual> ;
       rdfs:label "Lifecycle whole part"^^xsd:string ;