div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: usersuoagrusersuoagr~alegakisindex_el_filesPDFfilesSurvBatsAthenspdf · The recorded signals were analysed in a computer using the Pettersson LP-900 Sig- nal Analyzer This src=https:reader034vdocumentinreader034viewer20220507165e3cdc9b91180c22d2124929html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdiv