diff --git a/pipelines/params/operational_variable_ranges.yaml b/pipelines/params/validity_thresholds.yaml
similarity index 66%
rename from pipelines/params/operational_variable_ranges.yaml
rename to pipelines/params/validity_thresholds.yaml
index 5f422f2..6529425 100644
--- a/pipelines/params/operational_variable_ranges.yaml
+++ b/pipelines/params/validity_thresholds.yaml
@@ -1,22 +1,27 @@
-# Get values from data/<station>/<year>/global_config.r
-# Define operational ranges for diagnostic variables
-operational_range:
-  description : "Defines the value range of a particular variable"
-  variables:
-    VaporizerTemp_C :
-      lower_lim : 400 
-      upper_lim : 610 
-      description : "heater temperature"
-
-    ABsamp : 
-      lower_lim : 20000 
-      upper_lim : 500000 
-
-    FlowRate_ccs : 
-      lower_lim : 1.23 
-      upper_lim : 1.45 
-
-    FilamentEmission_mA : 
-      lower_lim : 0.65 
-      upper_lim : 1.5 
-
+
+flow_ref_tofware: &flow_ref 1.36
+flow_ref_correct: &flow_ref_correct 1.36
+
+# Get values from data/<station>/<year>/global_config.r
+# Define operational ranges for diagnostic variables
+validity_thresholds:
+  description : "Defines the value range of a particular variable"
+  variables:
+    VaporizerTemp_C :
+      lower_lim : 400 
+      upper_lim : 610 
+      description : "heater temperature"
+
+    ABsamp : 
+      lower_lim : 20000 
+      upper_lim : 500000 
+
+    FlowRate_ccs :
+    # TODO: Define the range as a percentage around the alias variable &flow_ref_correct above defined.
+      lower_lim : 1.23 
+      upper_lim : 1.45 
+
+    FilamentEmission_mA : 
+      lower_lim : 0.65 
+      upper_lim : 1.5 
+