diff --git a/tests/test_filtermod.py b/tests/test_filtermod.py
index 3a323ae3..e5396cf7 100644
--- a/tests/test_filtermod.py
+++ b/tests/test_filtermod.py
@@ -28,3 +28,68 @@ def test_filter_runmean(test_data):
     print(ico.vars.Hs[1:4])
     print(np.mean(ico.vars.Hs[1:4]))
     assert new.vars.Hs[2] == np.mean(ico.vars.Hs[1:4])
+
+
+def test_filter_llim_ulim(test_data):
+    varalias = 'Hs'  # default
+    sd = "2023-7-2 00"
+    ed = "2023-7-3 00"
+    nID = 'MO_Draugen_monthly'
+    name = 'Draugen'
+    ico = ic(nID=nID, sd=sd, ed=ed, varalias=varalias, name=name)
+    print(ico)
+    print(vars(ico).keys())
+
+    ico = ico.populate(path=str(test_data/"insitu/monthly/Draugen"))
+    new = ico.apply_limits(llim=1, ulim=3)
+    print(new.vars.time)
+    print(new.vars.Hs)
+    assert len(new.vars.time) == 85
+
+
+def test_filter_lanczos(test_data):
+    varalias = 'Hs'  # default
+    sd = "2023-7-2 00"
+    ed = "2023-7-3 00"
+    nID = 'MO_Draugen_monthly'
+    name = 'Draugen'
+    ico = ic(nID=nID, sd=sd, ed=ed, varalias=varalias, name=name)
+    print(ico)
+    print(vars(ico).keys())
+
+    ico = ico.populate(path=str(test_data/"insitu/monthly/Draugen"))
+    new = ico.filter_lanczos(window=5, cutoff=1/5, sampling_rate_Hz=1/1200)
+    assert not 'error' in vars(new).keys()
+
+
+def test_despike_blockQ(test_data):
+    varalias = 'Hs'  # default
+    sd = "2023-7-2 00"
+    ed = "2023-7-3 00"
+    nID = 'MO_Draugen_monthly'
+    name = 'Draugen'
+    ico = ic(nID=nID, sd=sd, ed=ed, varalias=varalias, name=name)
+    print(ico)
+    print(vars(ico).keys())
+
+    ico = ico.populate(path=str(test_data/"insitu/monthly/Draugen"))
+    new = ico.despike_blockQ(slider=20, chunk_min=5,
+                             llim_pct=.05, ulim_pct=.95,
+                             sampling_rate_Hz=1/1200)
+    assert not 'error' in vars(new).keys()
+
+
+def test_despike_blockStd(test_data):
+    varalias = 'Hs'  # default
+    sd = "2023-7-2 00"
+    ed = "2023-7-3 00"
+    nID = 'MO_Draugen_monthly'
+    name = 'Draugen'
+    ico = ic(nID=nID, sd=sd, ed=ed, varalias=varalias, name=name)
+    print(ico)
+    print(vars(ico).keys())
+
+    ico = ico.populate(path=str(test_data/"insitu/monthly/Draugen"))
+    new = ico.despike_blockQ(slider=12, sigma=2, chunk_min=6,
+                             sampling_rate_Hz=1/1200)
+    assert not 'error' in vars(new).keys()
diff --git a/wavy/filtermod.py b/wavy/filtermod.py
index 8947d95f..be2bef36 100644
--- a/wavy/filtermod.py
+++ b/wavy/filtermod.py
@@ -118,9 +118,9 @@ def filter_distance_to_coast(self, llim=0, ulim=100000000, **kwargs):
         print(" Number of remaining values:", len(new.vars['time']))
         return new
 
-    def filter_blockMean(self, **kwargs):
-        print('Apply blockMean')
-        return self
+    #def filter_blockMean(self, **kwargs):
+    #    print('Apply blockMean')
+    #    return self
 
     def filter_lanczos(self, **kwargs):
         print('Apply lanczos filter')
@@ -237,8 +237,8 @@ def filter_GP(self, **kwargs):
 
         return new
 
-    def filter_NIGP(self, **kwargs):
-        return self
+    #def filter_NIGP(self, **kwargs):
+    #    return self
 
     def filter_linearGAM(self, **kwargs):
         print('Apply LinearGAM filter')