diff --git a/artifact_1_band_width_analysis/tests/data/test_runs.json b/artifact_1_band_width_analysis/tests/data/test_runs.json
new file mode 100644
index 0000000..e49c8a9
--- /dev/null
+++ b/artifact_1_band_width_analysis/tests/data/test_runs.json
@@ -0,0 +1,26 @@
+[
+  {
+    "band_width": 120.5,
+    "aux": 3,
+    "near_expiry": 0.05,
+    "retry_tail_p99": 1.8
+  },
+  {
+    "band_width": 98.7,
+    "aux": 2,
+    "near_expiry": 0.15,
+    "retry_tail_p99": 2.3
+  },
+  {
+    "band_width": 134.2,
+    "aux": 4,
+    "near_expiry": 0.02,
+    "retry_tail_p99": 1.2
+  },
+  {
+    "band_width": 87.9,
+    "aux": 1,
+    "near_expiry": 0.22,
+    "retry_tail_p99": 3.1
+  }
+]
\ No newline at end of file