diff --git a/pynmea2/types/proprietary/ash.py b/pynmea2/types/proprietary/ash.py
index d62a10e..0715bef 100644
--- a/pynmea2/types/proprietary/ash.py
+++ b/pynmea2/types/proprietary/ash.py
@@ -34,7 +34,7 @@ class ASHRATT(ASH):
     '''
     @staticmethod
     def match(data):
-        return re.match(r'^\d{6}\.\d{3}$', data[1])
+        return re.match(r'^\d{6}\.\d{2,3}$', data[1])
 
     def __init__(self, *args, **kwargs):
         self.subtype = 'ATT'

diff --git a/test/test_ash.py b/test/test_ash.py
index b33261e..24a2bac 100644
--- a/test/test_ash.py
+++ b/test/test_ash.py
@@ -32,6 +32,13 @@ def test_ashratt():
     assert msg.render() == data
 
 
+def test_ashratt_with_2_vs_3_decimal_timestamp():
+    msg_3 = pynmea2.parse('$PASHR,130533.620,0.311,T,-80.467,-1.395,,0.066,0.067,0.215,2,3*0B')
+    msg_2 = pynmea2.parse('$PASHR,130533.62,0.311,T,-80.467,-1.395,,0.066,0.067,0.215,2,3*3B')
+
+    assert msg_3.timestamp == msg_2.timestamp
+
+
 def test_ash_undefined():
     '''
     Test that non-ATT messages still fall back to the generic ASH type

Issues with parshing PASHR sentences
Hi,

Just ran into some troubles when trying to parse an NMEA stream containing PASHR sentences, like below:
```
$PASHR,122144.75,240.68,T,,,,,,,2*04
$PASHR,122144.96,240.30,T,,,,,,,2*04
$PASHR,122145.18,239.91,T,,,,,,,2*06
$PASHR,122145.61,239.04,T,,,,,,,2*04
$PASHR,122145.83,238.59,T,,,,,,,2*01
$PASHR,122146.05,238.13,T,,,,,,,2*02
```

Seems like the special logic for these messages (see [here](https://github.com/Knio/pynmea2/blob/master/pynmea2/types/proprietary/ash.py#L24-L26) and [here](https://github.com/Knio/pynmea2/blob/master/pynmea2/types/proprietary/ash.py#L35-L37)) does not fit the messages that I have. 

The regex in the the last link is not catching the messages due to different number of decimal values in the timestamp. I.e. `122144.75` does not give a match with `'^\d{6}\.\d{3}$'`. Changing the regex to `'^\d{6}\.\d{2,3}$'` seems to do the trick.
test/test_ash.py::test_ashratt_with_2_vs_3_decimal_timestamp
test/test_ash.py::test_ashrltn test/test_ash.py::test_ashratt test/test_ash.py::test_ash_undefined