diff --git a/metobsapi/data_api.py b/metobsapi/data_api.py
index 9549478f0ae2f272a8c301fc230d9aba66500961..d3f40576cda8ed6e79be011550cff89d31308cc5 100644
--- a/metobsapi/data_api.py
+++ b/metobsapi/data_api.py
@@ -14,10 +14,12 @@ LOG = logging.getLogger(__name__)
 
 
 ROUNDING = {
-    'rel_hum': 0,
-    'wind_direction': 0,
-    'chlorophyll_ysi': 2,
-    'phycocyanin_ysi': 2,
+    'aoss.tower.rel_hum': 0,
+    'aoss.tower.wind_direction': 0,
+    'mendota.buoy.rel_hum': 0,
+    'mendota.buoy.wind_direction': 0,
+    'mendota.buoy.chlorophyll_ysi': 4,
+    'mendota.buoy.phycocyanin_ysi': 4,
 }