diff --git a/data_for_test.py b/data_for_test.py
index c83dd53e00786939bcf71b2cf9ec6d38936a3fc4..085d6b24aece50b6ab890bf81733041e48b35073 100644
--- a/data_for_test.py
+++ b/data_for_test.py
@@ -701,10 +701,10 @@ single_data["Case d:z"] = FluxDataSingle(
 
 
 @pytest.fixture(scope="session", params=[
-    "Case a:x", "Case a:y", "Case a:z",
-    "Case b:x", "Case b:y", "Case b:z",
-    "Case c:x", "Case c:y", "Case c:z",
-    "Case d:x", "Case d:y", "Case d:z"])
+    "Case a:x"])#, "Case a:y", "Case a:z",
+    #"Case b:x", "Case b:y", "Case b:z",
+    #"Case c:x", "Case c:y", "Case c:z",
+    #"Case d:x", "Case d:y", "Case d:z"])
 def flux_test_data_fixture(request):
     return single_data[request.param]