diff --git a/rollout_data_analysis/tests/data/rollout_series_sample.csv b/rollout_data_analysis/tests/data/rollout_series_sample.csv
new file mode 100644
index 0000000..b4db111
--- /dev/null
+++ b/rollout_data_analysis/tests/data/rollout_series_sample.csv
@@ -0,0 +1,11 @@
+run_id,unknown_rate,warn_rate,policy_hash,pinned
+run_001,0.02,0.05,hash_a,True
+run_002,0.00,0.04,hash_a,True
+run_003,0.10,0.15,hash_b,False
+run_004,0.05,0.08,hash_b,False
+run_005,0.20,0.25,hash_c,True
+run_006,0.12,0.18,hash_c,False
+run_007,0.03,0.06,hash_a,True
+run_008,0.00,0.02,hash_a,True
+run_009,0.08,0.12,hash_b,False
+run_010,0.15,0.22,hash_c,True
\ No newline at end of file