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Table 1 Summary statistics for eight narwhals instrumented with stomach temperature pills (STPs) in August 2012 and 2013

From: Stomach temperature of narwhals (Monodon monoceros) during feeding events

Year Whale ID no. Sex Length Estimated mass Duration of STP record Duration of contact with satellite transmitter Temperature drop/threshold of STP Time between release and first feeding event Average temperature, non-feeding Lowest temperature during feeding events Average temperature during feeding events Average duration of feeding events Feeding events Feeding rate Range of depths at feeding
    cm kg Hours Days °C Minutes °C (n) °C °C Minutes n Events/24 h m
2012 22849 M 335 700 15 42 10/33 133 34.5 (490) 25.0 31.6 3.3 5 8.0 40–216
  22850 M 400 1,028 414 45 5/33 829 36.2 (11,700) 24.0 30.2 10.7 45 2.6 23–553
  22853 M 278 467 10 45 10/33 171 35.4 (375) 16.5 31.2 7.5 2 4.8 38–166
  24638 F 400 867 13 36 5/33 321 35.4 (410) 23.4 29.6 6.2 8 14.8 3–252
2013 3963 M 400 1,028 24 80 0.6/34 37 35.2 (1,117) 10.5 29.5 9.5 13 13.0 0–240
  3964 M 356 799 30 84 0.6/33 161 35.5 (1,285) 29.0 33.3 13.7 18 14.4 13–383
  3965 F 420 959 191 83 0.6/34 362 35.8 (8,169) 25.8 33.8 14.5 94 11.8 5–832
  6335 M 390 974 47 62 0.6/34 21 35.7 (1,708) 29.4 33.3 11.2 19 9.7 16–610