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Table 1 Results of counting procedure

From: Monitoring butterflies with an unmanned aerial vehicle: current possibilities and future potentials

Date Entry Left Re-entry Total count % Error
04.06.2015 87 57 29 58 −1.72414
10.06.2015 15 9 3 12 −25
18.06.2015 9 7 1 8 −12.5