Update KAN_U.csv

Author: BaptisteVandecrux

flags/KAN_U.csv

@@ -14,6 +14,8 @@ t0,t1,variable,flag,comment,URL_graphic
 2020-09-01T00:00:00+00:00,2021-09-01T00:00:00+00:00,tilt_x tilt_y,NAN,suspicious tilt values (bav),
 2023-11-20T00:00:00+00:00,2025-05-16T17:00:00+00:00,tilt_x tilt_y,NAN,suspicious tilt values that did not match with the actual tilt on station visit (bav),
 
+2025-01-20T00:00:00+00:00,,rh_l,DECOR,decorelated humidity,https://github.com/GEUS-Glaciology-and-Climate/PROMICE-AWS-data-issues/issues/220
+
 2009-10-03T00:00:00+00:00,2009-10-07T00:00:00+00:00,dlr ulr dsr usr,RIME,automatically detected as rime-affected (bav),https://github.com/GEUS-Glaciology-and-Climate/PROMICE-AWS-data-issues/issues/61
 2009-11-25T00:00:00+00:00,2009-11-28T00:00:00+00:00,dlr ulr dsr usr,RIME,automatically detected as rime-affected (bav),https://github.com/GEUS-Glaciology-and-Climate/PROMICE-AWS-data-issues/issues/61
 2011-10-20T00:00:00+00:00,2011-10-23T00:00:00+00:00,dlr ulr dsr usr,RIME,automatically detected as rime-affected (bav),https://github.com/GEUS-Glaciology-and-Climate/PROMICE-AWS-data-issues/issues/61