diff --git a/src/NmeaParser.Shared/Nmea/Gps/Garmin/PGRMZ.cs b/src/NmeaParser.Shared/Nmea/Gps/Garmin/PGRMZ.cs
new file mode 100644
index 0000000..1013d8c
--- /dev/null
+++ b/src/NmeaParser.Shared/Nmea/Gps/Garmin/PGRMZ.cs
@@ -0,0 +1,79 @@
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NmeaParser.Nmea.Gps.Garmin
+{
+	/// <summary>
+	/// Altitude Information
+	/// </summary>
+	[NmeaMessageType(Type = "PGRMZ")]
+	public class Pgrmz : NmeaMessage
+	{
+		public enum AltitudeUnit
+		{
+			Unknown,
+			Feet
+		}
+		public enum PositionFixDimension : int
+		{
+			/// <summary>
+			/// No fix
+			/// </summary>
+			None = 0,
+			/// <summary>
+			/// 2D Fix
+			/// </summary>
+			UserAltitude = 2,
+			/// <summary>
+			/// 3D Fix
+			/// </summary>
+			GpsAltitude = 3
+		}
+		protected override void LoadMessage(string[] message)
+		{
+			if (message[0].Length > 0)
+				Altitude = double.Parse(message[0], CultureInfo.InvariantCulture);
+			else
+				Altitude = double.NaN;
+			Unit = message[1] == "f" ? AltitudeUnit.Feet : AltitudeUnit.Unknown;
+			int dim = -1;
+			if (message[2].Length == 1 && int.TryParse(message[2], out dim))
+				FixDimension = (PositionFixDimension)dim;
+		}
+
+		/// <summary>
+		/// Estimated horizontal position error in meters (HPE)
+		/// </summary>
+		public double Altitude { get; private set; }
+
+		/// <summary>
+		/// Horizontal Error unit ('M' for Meters)
+		/// </summary>
+		public AltitudeUnit Unit { get; private set; }
+
+		/// <summary>
+		/// Estimated vertical position error in meters (VPE)
+		/// </summary>
+		public PositionFixDimension FixDimension { get; private set; }
+	}
+}
diff --git a/src/NmeaParser.Shared/NmeaParser.Shared.projitems b/src/NmeaParser.Shared/NmeaParser.Shared.projitems
index f482a6b..fd8fb05 100644
--- a/src/NmeaParser.Shared/NmeaParser.Shared.projitems
+++ b/src/NmeaParser.Shared/NmeaParser.Shared.projitems
@@ -11,6 +11,7 @@
   <ItemGroup>
     <Compile Include="$(MSBuildThisFileDirectory)NmeaDevice.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)NmeaFileDevice.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Nmea\Gps\Garmin\PGRMZ.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Nmea\Gps\Garmin\PGRME.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Nmea\Gps\GPGLL.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Nmea\Gps\GPBOD.cs" />
diff --git a/src/NmeaParser.Tests/NmeaMessages.cs b/src/NmeaParser.Tests/NmeaMessages.cs
index e1f4506..9ccc97e 100644
--- a/src/NmeaParser.Tests/NmeaMessages.cs
+++ b/src/NmeaParser.Tests/NmeaMessages.cs
@@ -304,5 +304,31 @@ namespace NmeaParser.Tests
 			Assert.AreEqual("POINTB", bod.DestinationID, "DestinationID");
 			Assert.AreEqual("POINTA", bod.OriginID, "OriginID");
 		}
+
+
+		[TestMethod]
+		public void TestPgrmz_Empty()
+		{
+			string input = "$PGRMZ,,,*7E";
+			var msg = NmeaMessage.Parse(input);
+			Assert.IsInstanceOfType(msg, typeof(NmeaParser.Nmea.Gps.Garmin.Pgrmz));
+			var rmz = (NmeaParser.Nmea.Gps.Garmin.Pgrmz)msg;
+			Assert.AreEqual(double.NaN, rmz.Altitude, "Altitude");
+			Assert.AreEqual(NmeaParser.Nmea.Gps.Garmin.Pgrmz.AltitudeUnit.Unknown, rmz.Unit, "Unit");
+			Assert.AreEqual(NmeaParser.Nmea.Gps.Garmin.Pgrmz.PositionFixDimension.None, rmz.FixDimension, "FixDimension");
+		}
+
+		[TestMethod]
+		public void TestPgrmz()
+		{
+			string input = "$PGRMZ,93,f,3*21";
+			var msg = NmeaMessage.Parse(input);
+			Assert.IsInstanceOfType(msg, typeof(NmeaParser.Nmea.Gps.Garmin.Pgrmz));
+			var rmz = (NmeaParser.Nmea.Gps.Garmin.Pgrmz)msg;
+			Assert.AreEqual(93d, rmz.Altitude, "Altitude");
+			Assert.AreEqual(NmeaParser.Nmea.Gps.Garmin.Pgrmz.AltitudeUnit.Feet, rmz.Unit, "Unit");
+			Assert.AreEqual(NmeaParser.Nmea.Gps.Garmin.Pgrmz.PositionFixDimension.GpsAltitude, rmz.FixDimension, "FixDimension");
+		}
+
 	}
 }