diff --git a/retry_tail_analysis/tests/data/test_experiment_data.json b/retry_tail_analysis/tests/data/test_experiment_data.json
new file mode 100644
index 0000000..912a41b
--- /dev/null
+++ b/retry_tail_analysis/tests/data/test_experiment_data.json
@@ -0,0 +1,17 @@
+[
+  {
+    "run_id": "28",
+    "retry_tailp99": 98.7,
+    "threshold": 100.0
+  },
+  {
+    "run_id": "31a",
+    "retry_tailp99": 101.5,
+    "threshold": 100.0
+  },
+  {
+    "run_id": "31b",
+    "retry_tailp99": 120.3,
+    "threshold": 110.0
+  }
+]
\ No newline at end of file