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Table 3 Performance of SPOT-227 and SPOT-305A of ear satellite transmitters (PTTs) mounted on subadult, adult, male and female polar bears

From: Performance and retention of lightweight satellite radio tags applied to the ears of polar bears (Ursus maritimus)

Transmitter N Functional longevity (days) Percentage of high-quality locations (LQ ≥ 1)
Mean Median SD Mean Median SD
SPOT-227
Subadult males 14 52.4 42.0 22.9 67.25 71.86 11.25
Subadult females 9 43.2 45.0 20.1 68.32 69.77 11.78
Adult males 39 68.6 63.0 39.5 63.07 64.96 11.83
Adult females 3 33.0 38.0 8.7 62.73 64.06 5.71
SPOT-305A
Subadult males 5 25.4 22.0 16.1 55.70 57.89 7.39
Subadult females 2 22.0 22.0 17.0 58.26 58.26 7.29
Adult males 10 61.1 59.0 31.0 49.87 48.52 14.25
Adult females 2 70.5 70.5 50.21 48.71 48.71 11.31
Total
SPOT-227 65 60.0 52.0 34.9 64.68 66.48 11.50
SPOT-305A 19 48.6 38.0 32.6 52.17 53.10 11.64
  1. The bears were tagged in East Greenland, Baffin Bay, and Kane Basin in the period 2007–2013. Differences in functional longevity and percentage of high-quality locations were not significant for age and sex groups pooled (P > 0.05, see text)