Do I understand correctly that the data exchange protocol you use GET? When the request from the browser, you receive a reply from the server? If you get, then use this query to the Web API.
I have not worked with SOAP, so ask this question. I enter into the browser URL http://192.168.0.250/Service1.svc?wsdl and see a blank page. To access the data we need some password or authorization of the service? If I saw the data from your image in my browser, then I would say that it is possible to receive the data and manually obtain from them the necessary information, but I see a blank page and I can not say anything.
So, you have a server reveals the answer. Get the answer in the Web API and then manually get the right information from the tags. If the server to return data in JSON format, then get them was s much easier.