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</o:shapelayout></xml><![endif]--></head><body lang=DE-AT link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Dear tlocoh-list,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I’ve calculated revisitation rate and mean duration of visit for some birds I put GPS-transmitters on. I chose an inter-visit-gap of 12 hours. Maybe I’m already work-blind, but I can’t seem to understand the intervals the output gives me. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>If I display the nsv data, it shows me all points which are considered as consecutive visits to a hull, right? And the colour code shows if the individual was there rarely or often. The intervals of my output are:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>1 – 11.6 <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>11.6 – 22.2 <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>22.2 – 32.8 … and so on.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>So, this means, the individual revisited this hull once or 22 times during one inter-visit-gap? That doesn’t seem right. I’m quite sure I’m missing something.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>It is the same for the mean duration of visit. This means the mean number of records taken of an individual during one visit to the hull, right? But the output gives me<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>1.30 – 11.56<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>11.56 – 21.82 and so on up to 52.60. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>This cannot mean the bird stayed in this hull for 52 records. My GPS interval is one hour and the transmitters are shut down during the night to save energy, so they don’t record over night. Maybe I have to keep that in mind?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>I tried to send you a sample image for illustration<span style='color:#1F497D'> </span>but it seems to be too big to be sent. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>I hope my explanation is understandable. I’d be very grateful for some advice.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Thank you and best wishes,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Julia <o:p></o:p></span></p></div></body></html>