diff --git a/data_logging/tests/data/sample_log.json b/data_logging/tests/data/sample_log.json
new file mode 100644
index 0000000..24f80ed
--- /dev/null
+++ b/data_logging/tests/data/sample_log.json
@@ -0,0 +1,27 @@
+[
+  {
+    "timestamp": "2024-03-01T08:00:00Z",
+    "temperature": 15.2,
+    "wind_speed": 7.5
+  },
+  {
+    "timestamp": "2024-03-01T08:10:00Z",
+    "temperature": 15.5,
+    "wind_speed": 6.9
+  },
+  {
+    "timestamp": "2024-03-01T08:20:00Z",
+    "temperature": 15.8,
+    "wind_speed": 8.1
+  },
+  {
+    "timestamp": "2024-03-01T08:30:00Z",
+    "temperature": 16.0,
+    "wind_speed": 9.3
+  },
+  {
+    "timestamp": "2024-03-01T08:40:00Z",
+    "temperature": 16.3,
+    "wind_speed": 7.8
+  }
+]
\ No newline at end of file