How can I separate data in the text file in order to take only some information

Dear users, I hope you can help me with this issue. This is part of my .txt file:

<01/22/2013 13:34:04> <Debug> <BCF2AF19410A> <BCF2AF> <INT6400 based Powerline networking device.> <nmdev059_7004> <Caller-90> <Thread-89163> <CPE soap message> 
Host : 172.31.110.59:7003 User-Agent : TR069 Client 1.0 Content-Type : text/xml; charset=utf-8 Authorization : Basic ZGV2b2xvMjpkZXZvbG8= Cookie : JSESSIONID=15BfQ2Hcg15LGyLZvrnsPvNvgtCsRp0qPJNThfmGxQDjhNwzYfRq!-670712735 
Device.HomePlug.Interface.1.AssociatedDevice.1.SNRPerTone
<Value  xsi:type= "xsd:string">28.1,28.4,28.5,29.1,28.8,28.7,28.9,29.0,29.3,29.8,29.7,29.7,29.5,29.5,29.5,29.5,29.6,29.8,29.7</Value>
</ParameterValueStruct>

<Name>Device.HomePlug.Interface.1.AssociatedDevice.1.RxPhyRate</Name>
<Value xsi:type="xsd:unsignedInt">120</Value>


<Name>Device.HomePlug.Interface.1.AssociatedDevice.1.EndStationMACs</Name>
<Value xsi:type="xsd:string">4e:40:3e:65:4d:c6,ac:81:12:82:7b:60,02:aa:aa:00:01:15</Value>


<Name>Device.HomePlug.Interface.1.AssociatedDevice.1.AvgAttenuation</Name>
<Value xsi:type="xsd:unsignedInt">0</Value>


<Name>Device.HomePlug.Interface.1.AssociatedDevice.1.Active</Name>
<Value xsi:type="xsd:boolean">1</Value>

<ParameterValueStruct>
Device.HomePlug.Interface.1.AssociatedDevice.2.MACAddress
<Value xsi:type="xsd:string">bc:f2:af:19:3d:97</Value>"

And this data is repeated lot of times. Then, at each time, I need to take some parameters names with their values. Thus, my question is: after I read this file in MATLAB how can I separate the information that I need in new variables. For example date and time, SNR per Tone, AvgAttenuation.

I hope you can help me with this issue.