Table 2 Exploratory data analysis of the calls of Uperodon globulosus

Call rate (1/s)

0.53 ± 0.22

0.05–1.23

33.244

19.990

0.601

4.10

<  0.05

0.215

Call duration (ms)

154.28 ± 23.11

108–198

4.367

16.765

3.839

167.14

<  0.001

0.912

Rise time (ms)

77.16 ± 11.53

54–99

4.357

16.707

3.835

165.79

<  0.001

0.911

Fall time (ms)

77.15 ± 11.52

54–99

4.253

16.626

3.909

172.11

<  0.001

0.914

Low peak frequency (Hz)

432.82 ± 45.91

392.1–587.3

1.206

12.873

10.673

1067.60

<  0.001

0.985

High peak frequency (Hz)

1517.51 ± 331.36

618.2–2040.1

7.009

21.641

3.088

59.88

<  0.001

0.787

Delta power (dB)

2.86 ± 2.87

−9.2 – 6.2

12.989

74.342

5.723

19.95

<  0.001

0.552

FM of low frequency (Hz)

10.91 ± 38.77

−164.9 – 113.3

–

202.932

0.000

10.49

<  0.001

0.393

FM of high frequency (Hz)

−45.5 ± 546.68

− 3071.3 – 1876.1

−20.731

−200.388

9.666

5.40

<  0.001

0.250

Dominant harmonic

7.18 ± 1.91

2.93–10.22

6.936

28.365

4.090

102.28

<  0.001

0.864