diff --git a/h_transport_materials/property_database/niobium.py b/h_transport_materials/property_database/niobium.py
index eb70afa..1d7958d 100644
--- a/h_transport_materials/property_database/niobium.py
+++ b/h_transport_materials/property_database/niobium.py
@@ -19,7 +19,7 @@
         u.Quantity(100, u.degC),
     ),
     source="qi_tritium_1983",
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     isotope="T",
 )
 
@@ -31,7 +31,7 @@
         u.Quantity(100, u.degC),
     ),
     source="qi_tritium_1983",
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     isotope="D",
 )
 
@@ -43,7 +43,7 @@
         u.Quantity(100, u.degC),
     ),
     source="qi_tritium_1983",
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     isotope="H",
 )
 
@@ -55,7 +55,7 @@
         250 * u.K,
     ),
     source="qi_tritium_1983",
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     isotope="H",
 )
 
diff --git a/h_transport_materials/property_database/tantalum.py b/h_transport_materials/property_database/tantalum.py
index 9a1981c..6b19ba2 100644
--- a/h_transport_materials/property_database/tantalum.py
+++ b/h_transport_materials/property_database/tantalum.py
@@ -27,7 +27,7 @@
         u.Quantity(-180, u.degC),
         250 * u.K,
     ),
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     source="qi_tritium_1983",
     isotope="H",
 )
@@ -39,7 +39,7 @@
         250 * u.K,
         u.Quantity(100, u.degC),
     ),
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     source="qi_tritium_1983",
     isotope="H",
 )
@@ -51,7 +51,7 @@
         u.Quantity(-140, u.degC),
         u.Quantity(100, u.degC),
     ),
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     source="qi_tritium_1983",
     isotope="D",
 )
@@ -63,7 +63,7 @@
         u.Quantity(-140, u.degC),
         u.Quantity(100, u.degC),
     ),
-    note="table 1",
+    note="table 1, temperature range from Fig 1",
     source="qi_tritium_1983",
     isotope="T",
 )
diff --git a/h_transport_materials/property_database/vanadium.py b/h_transport_materials/property_database/vanadium.py
index 9ae9422..70e7282 100644
--- a/h_transport_materials/property_database/vanadium.py
+++ b/h_transport_materials/property_database/vanadium.py
@@ -27,6 +27,7 @@
         u.Quantity(200, u.degC),
     ),
     source="qi_tritium_1983",
+    note="table 1, temperature range from Fig 1",
     isotope="H",
 )
 
@@ -38,6 +39,7 @@
         u.Quantity(200, u.degC),
     ),
     source="qi_tritium_1983",
+    note="table 1, temperature range from Fig 1",
     isotope="D",
 )
 
@@ -49,6 +51,7 @@
         u.Quantity(200, u.degC),
     ),
     source="qi_tritium_1983",
+    note="table 1, temperature range from Fig 1",
     isotope="T",
 )  # TODO get data from experimental points, see issue #64