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I don't have the equipment to make sonograms myself so I ran these past a friend who does.
This one is just not clear enough to be sure. You should be seeing a strong vertical line running from 20kh - almost 100kh; yours stops at around 70kh and goes down to 5kh. Also there are no definite lines - looks more like static.
The bat was probably just too far away to get a good reading.
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Lat/Lng: 50.81196, -3.66322
OS grid ref: SS829026