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Table 2 Target passage rate (TPR) summary statistics

From: Radar quantifies migrant concentration and Dawn reorientation at a Great Lakes shoreline

  Paired Hours TPRa r Pooled Mean TPRb ± SE Percent differencec between shoreline and inland TPR ± SE
Trial Day Dusk Night Dawn Day Dusk Night Dawn
RC 145 0.99 21 ± 5 30 ± 16 382 ± 103 24 ± 8
A 283 0.94 15 ± 6 14 ± 6 476 ± 84 58 ± 26 99 ± 69 211 ± 136 11 ± 8 203 ± 120
B 232 0.91 34 ± 8 46 ± 23 546 ± 108 164 ± 45 53 ± 18 13 ± 15 13 ± 12 143 ± 57
C 221 0.97 85 ± 14 56 ± 10 767 ± 137 189 ± 46 22 ± 18 26 ± 18 13 ± 6 124 ± 52
D 457 0.77 19 ± 2 18 ± 2 92 ± 7 21 ± 7 (10 ± 10) 11 ± 11 34 ± 9 (39 ± 43)
  1. Number of paired data collection hours, Pearson’s correlation coefficient (r) for passage rate between radar units per paired hour, passage rate per biological period, and percent difference in passage rates between shoreline and inland sites per biological period for four trials and radar comparison (RC). a TPR is the number of targets detected by the vertical antenna within the 1 km standard front per hour. b Pooled mean is the average hourly target passage rate, pooled between both radar units. c Percent difference was calculated as shoreline TPR minus inland TPR, divided by inland TPR. Percent difference is reported as a proportion of inland TPR for comparability to slope test results. The mean difference with associated standard error is reported. A positive value indicates higher activity at the shoreline. Negative values are in parentheses