diff --git a/spike_finder/tests/data/sample_log.json b/spike_finder/tests/data/sample_log.json
new file mode 100644
index 0000000..adbda93
--- /dev/null
+++ b/spike_finder/tests/data/sample_log.json
@@ -0,0 +1,12 @@
+[
+  {"timestamp": "2024-06-01T12:00:00Z", "value": 0.82},
+  {"timestamp": "2024-06-01T12:00:01Z", "value": 0.85},
+  {"timestamp": "2024-06-01T12:00:02Z", "value": 0.99},
+  {"timestamp": "2024-06-01T12:00:03Z", "value": 1.05},
+  {"timestamp": "2024-06-01T12:00:04Z", "value": 0.83},
+  {"timestamp": "2024-06-01T12:00:05Z", "value": 1.20},
+  {"timestamp": "2024-06-01T12:00:06Z", "value": 0.88},
+  {"timestamp": "2024-06-01T12:00:07Z", "value": 0.91},
+  {"timestamp": "2024-06-01T12:00:08Z", "value": 1.15},
+  {"timestamp": "2024-06-01T12:00:09Z", "value": 0.87}
+]
\ No newline at end of file