diff --git a/trace_agg/tests/data/test_trace.json b/trace_agg/tests/data/test_trace.json
new file mode 100644
index 0000000..4414ee8
--- /dev/null
+++ b/trace_agg/tests/data/test_trace.json
@@ -0,0 +1,18 @@
+[
+  {
+    "run_id": "run_001_pinned",
+    "mischfenster_p50": 15.2,
+    "mischfenster_p95": 25.8,
+    "mischfenster_max": 39.0,
+    "step_order_stability": 97.5,
+    "read_between_steps": 12
+  },
+  {
+    "run_id": "run_001_unpinned",
+    "mischfenster_p50": 18.7,
+    "mischfenster_p95": 31.4,
+    "mischfenster_max": 47.9,
+    "step_order_stability": 88.3,
+    "read_between_steps": 15
+  }
+]
\ No newline at end of file