diff --git a/cea/resources/radiation/daysim.py b/cea/resources/radiation/daysim.py
index 7db6f8348b..551999fd01 100644
--- a/cea/resources/radiation/daysim.py
+++ b/cea/resources/radiation/daysim.py
@@ -327,7 +327,7 @@ def isolation_daysim(chunk_n, cea_daysim, building_names, locator, radiance_para
 
 
 def write_sensor_results(sensor_data_path, sensor_values):
-    feather.write_feather(sensor_values, sensor_data_path, compression="zstd")
+    feather.write_feather(sensor_values.T, sensor_data_path, compression="zstd")
 
 
 def write_aggregated_results(building_name, sensor_values, locator, date):