From 181139dc7e73e1c57c5f9102fdb407d7bec9ef77 Mon Sep 17 00:00:00 2001
From: pcain-usgs <pcain@usgs.gov>
Date: Mon, 26 Oct 2020 09:44:13 -0600
Subject: [PATCH] Add comment for start/end time adjustment

---
 geomagio/Controller.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/geomagio/Controller.py b/geomagio/Controller.py
index adf42c83..2d6bf659 100644
--- a/geomagio/Controller.py
+++ b/geomagio/Controller.py
@@ -186,6 +186,8 @@ class Controller(object):
                 timeseries=timeseries, renames=options.rename_input_channel
             )
         processed = algorithm.process(timeseries)
+        # for averaging filter steps, return data with aligned starttime/endtime
+        # if no data is available, return empty trace with aligned starttime/endtime
         if options.output_interval in ["hour", "day"]:
             starttime = processed[0].stats.starttime
             endtime = processed[0].stats.endtime
-- 
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