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Table 1 Distribution of false detection tag ID codes by receiver

From: Ghosts in the data: false detections in VEMCO pulse position modulation acoustic telemetry monitoring equipment

Receiver Depth (m) Orientation Number of false detection tag ID codes Number of unique false detection tag ID codes Detection of false tag ID codes Mean number of false detections per day Comparison to Poisson (random daily detections)
Χ2 P
101,715 21 Down 30 7 58 0.25 53.8 <0.0001
101,717 21 Down 29 5 68 0.29 180.1 <0.0001
101,713 54 Down 44 5 92 0.39 126.0 <0.0001
101,714 54 Down 46 4 147 0.63 258.3 <0.0001
101,718 78 Up 59 7 128 0.54 81.5 <0.0001
101,711 78 Up 44 4 107 0.46 561.1 <0.0001
101,710 78 Down 67 10 179 0.76 423.2 <0.0001
101,712 78 Down 64 24 197 0.84 139.6 <0.0001