diff --git a/pylot/core/analysis/trigger.py b/pylot/core/analysis/trigger.py
index baa4ccd8..aa900cef 100644
--- a/pylot/core/analysis/trigger.py
+++ b/pylot/core/analysis/trigger.py
@@ -8,12 +8,18 @@ def createSingleTriggerlist(st, station='ZV01', trigcomp='Z', stalta=(1, 10),
                             trigonoff=(6, 1)):
     '''
     uses a single-station trigger to create a triggerlist for this station
-    :param st:
-    :param station:
-    :param trigcomp:
-    :param stalta:
-    :param trigonoff:
-    :return:
+    :param st: obspy stream
+    :type  st:
+    :param station: station name to get triggers for  (optional, default = ZV01)
+    :type  station: str
+    :param trigcomp: (optional, default = Z)
+    :type  trigcomp: str
+    :param stalta: (optional, default = (1,10))
+    :type  stalta: tuple
+    :param trigonoff: (optional, default = (6,1))
+    :type  trigonoff: tuple
+    :return: list of triggtimes
+    :rtype: list
     '''
     tr = st.copy().select(component=trigcomp, station=station)[0]
     df = tr.stats.sampling_rate
@@ -32,7 +38,7 @@ def createSubCoincTriggerlist(trig, station='ZV01'):
     coincidence trigger and are seen at the demanded station
     :param trig: list containing triggers from coincidence trigger
     :type trig: list
-    :param station: station name to get triggers for
+    :param station: station name to get triggers for (optional, default = ZV01)
     :type station: str
     :return: list of triggertimes
     :rtype: list