diff --git a/14062899_pm25.csv b/14062899_pm25.csv
index 22138ac85e8821b6b4f889bb196b80ea18a1c9a0..b945167805975e27df7bd8297df29b53e048dc1f 100644
--- a/14062899_pm25.csv
+++ b/14062899_pm25.csv
@@ -741,3 +741,4 @@ timestamp,value
 2025-01-30T08:30:38.072763,2.05
 2025-01-30T08:47:38.956637,2.28
 2025-01-30T09:04:38.562602,1.38
+2025-01-30T09:21:38.759385,1.75