Table 1 Characteristics of the data analyzed. Table includes name of the data set, references, place, season, number of phrases analyzed and sample rate of the data.

From: Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types

Data Set

Latitude (S)/longitude (W)

Year

Austral season

Number of SEP1/2 phrases

Sampling rate fs (Hz)

ETP 1 (a)

8°/95°

1996

winter

23/50

100

IWC SOWER (b)

29°/72°

1997

sum.

−/36

1000

ETP 2 (a)

8°/95°

2002

winter

−/50

250

CTBTO (c)

34°/79°

2007

fall

31/-

250

CTBTO (c)

34°/79°

2009

fall

−/50

250

Corcovado 1 (d)

44°/74°

2012

sum.

33/50

2000

Corcovado 1 (d)

44°/74°

2013

sum.

−/50

2000

CTBTO (c)

34°/79°

2014

sum.

20/50

250

Corcovado 2 (f)

44°/74°

2016

sum.

−/50

4000

Chañaral (e)

29°/72°

2017

sum.

−/50

48000

  1. References: (a): Stafford et al.14, (b) Shabangu et al.21, (c) CTBTO https://ctbto.org/, (d) Buchan et al.17, (e) Patris22, (f): Buchan et al., unpublished.