Update get_psm3 interval description (#1712)

* Update get_psm3 interval description * Update v0.9.6.rst
pvlib · Apr 8, 2023 · 4c24be0 · 4c24be0
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diff --git a/docs/sphinx/source/whatsnew/v0.9.6.rst b/docs/sphinx/source/whatsnew/v0.9.6.rst
@@ -23,7 +23,8 @@ Testing
 
 Documentation
 ~~~~~~~~~~~~~
-
+* Updated the description of the interval parameter in
+  :py:func:`pvlib.iotools.get_psm3`. (:issue:`1702`, :pull:`1712`)
 
 Benchmarking
 ~~~~~~~~~~~~~
@@ -35,4 +36,4 @@ Requirements
 
 Contributors
 ~~~~~~~~~~~~
-
+* Adam R. Jensen (:ghuser:`adamrjensen`)
diff --git a/pvlib/iotools/psm3.py b/pvlib/iotools/psm3.py
@@ -88,8 +88,8 @@ def get_psm3(latitude, longitude, api_key, email, names='tmy', interval=60,
         PSM3 API parameter specifing year or TMY variant to download, see notes
         below for options
     interval : int, {60, 5, 15, 30}
-        interval size in minutes, must be 5, 15, 30 or 60. Only used for
-        single-year requests (i.e., it is ignored for tmy/tgy/tdy requests).
+        interval size in minutes, must be 5, 15, 30 or 60. Must be 60 for
+        typical year requests (i.e., tmy/tgy/tdy).
     attributes : list of str, optional
         meteorological fields to fetch. If not specified, defaults to
         ``pvlib.iotools.psm3.ATTRIBUTES``. See references [2]_, [3]_, and [4]_