diff --git a/examples/simple_viewer.py b/examples/simple_viewer.py
index b6b17f59905e6d6847143f1d53c633788ac036bf..d7634c2feb60cdd18842250d98e3c7406a27475c 100644
--- a/examples/simple_viewer.py
+++ b/examples/simple_viewer.py
@@ -11,6 +11,7 @@ from finam.modules.visual import time_series
 from finam_mhm_module import Mhm
 from matplotlib import pyplot as plt
 
+
 def grid_select(grid):
     col, row = 3, 5
     return grid[col + row * 5]
diff --git a/src/finam_mhm_module/mhm.py b/src/finam_mhm_module/mhm.py
index 0308ab5dd4dd84248582fd547b52df7f81eedb88..f3aa1b53b8deeacf2fe3464ef94e7a393e35dd6b 100644
--- a/src/finam_mhm_module/mhm.py
+++ b/src/finam_mhm_module/mhm.py
@@ -2,10 +2,11 @@
 FINAM mHM module.
 """
 from datetime import datetime
-import mhm_pybind as mp
 
-from finam.core.sdk import ATimeComponent, Output
+import mhm_pybind as mp
+import numpy as np
 from finam.core.interfaces import ComponentStatus
+from finam.core.sdk import ATimeComponent, Output
 from finam.data.grid import Grid, GridSpec
 
 
@@ -35,14 +36,14 @@ class Mhm(ATimeComponent):
         # set time
         year, month, day, hour = mp.run.current_time()
         print("time", year, month, day, hour)
-        if hour == -1:
+        if hour < 0:
             hour = 0
         self._time = datetime(year=year, month=month, day=day, hour=hour)
         # get grid info
         ncols, nrows, ncells, xll, yll, cell_size, no_data = mp.get.l1_domain_info()
         self.no_data = no_data
         self.gridspec = GridSpec(
-            ncols=ncols, nrows=nrows, cell_size=cell_size, xll=xll, yll=yll
+            ncols=nrows, nrows=ncols, cell_size=cell_size, xll=xll, yll=yll
         )
         self.outputs["runoff"] = Output()
         self._status = ComponentStatus.INITIALIZED
@@ -54,7 +55,7 @@ class Mhm(ATimeComponent):
             data=Grid(
                 spec=self.gridspec,
                 no_data=self.no_data,
-                data=runoff.filled().reshape(-1),
+                data=np.fliplr(runoff.filled()).reshape(-1, order="F"),
             ),
             time=self.time,
         )
@@ -82,7 +83,7 @@ class Mhm(ATimeComponent):
             data=Grid(
                 spec=self.gridspec,
                 no_data=self.no_data,
-                data=runoff.filled().reshape(-1),
+                data=np.fliplr(runoff.filled()).reshape(-1, order="F"),
             ),
             time=self.time,
         )