diff --git a/logger_setup/tests/data/sample_readings.csv b/logger_setup/tests/data/sample_readings.csv
new file mode 100644
index 0000000..8bdbf4b
--- /dev/null
+++ b/logger_setup/tests/data/sample_readings.csv
@@ -0,0 +1,11 @@
+timestamp,temperature_c,humidity_percent,pressure_hpa,lux
+2024-06-01T22:00:00,18.2,55.0,1013.2,15.4
+2024-06-01T22:05:00,18.1,55.3,1013.1,14.9
+2024-06-01T22:10:00,18.0,55.5,1013.0,16.2
+2024-06-01T22:15:00,17.8,56.0,1012.8,17.1
+2024-06-01T22:20:00,17.7,56.3,1012.6,13.8
+2024-06-01T22:25:00,17.5,56.6,1012.5,12.9
+2024-06-01T22:30:00,17.4,57.0,1012.3,14.4
+2024-06-01T22:35:00,17.3,57.4,1012.1,13.5
+2024-06-01T22:40:00,17.2,57.8,1012.0,12.0
+2024-06-01T22:45:00,17.1,58.0,1011.9,11.3
\ No newline at end of file