diff --git a/data_analysis/tests/data/sample_rover_log.json b/data_analysis/tests/data/sample_rover_log.json
new file mode 100644
index 0000000..6a78c61
--- /dev/null
+++ b/data_analysis/tests/data/sample_rover_log.json
@@ -0,0 +1,44 @@
+[
+  {
+    "t": "2024-05-01T00:00:00Z",
+    "Lx": 120,
+    "dB": 35.2,
+    "Temp": 18.5,
+    "Inference": 0.05
+  },
+  {
+    "t": "2024-05-01T00:01:00Z",
+    "Lx": 118,
+    "dB": 36.0,
+    "Temp": 18.6,
+    "Inference": 0.04
+  },
+  {
+    "t": "2024-05-01T00:02:00Z",
+    "Lx": 119,
+    "dB": 35.8,
+    "Temp": 18.7,
+    "Inference": 0.06
+  },
+  {
+    "t": "2024-05-01T00:03:00Z",
+    "Lx": 300,
+    "dB": 50.1,
+    "Temp": 22.0,
+    "Inference": 0.92
+  },
+  {
+    "t": "2024-05-01T00:04:00Z",
+    "Lx": 115,
+    "dB": 36.2,
+    "Temp": 18.5,
+    "Inference": 0.05
+  },
+  {
+    "t": "2024-05-01T00:05:00Z",
+    "Lx": 117,
+    "dB": 35.9,
+    "Temp": 18.6,
+    "Inference": 0.04
+  }
+]
\ No newline at end of file