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Table 2 Mean tilt angles (<θ>) with standard deviations (S θ ) used in estimating the mean TS of cuttlebone at 70 and 120 kHz (Lee and Demer 2014). The TS and θ for live cuttlefish were simultaneously measured by a split-beam echo sounder and a CCTV system, respectively

From: The influence of cuttlebone on the target strength of live golden cuttlefish (Sepia esculenta) at 70 and 120 kHz

Specimen No. 70 kHz 120 kHz
M. tilt angle (deg) Standard dev. (deg) N M. tilt angle (deg) Standard dev. (deg) N
1 −3.08 12.64 14 −3.15 3.27 16
2 −1.71 6.21 15 −3.01 5.46 15
3 −2.96 7.39 15 −4.77 6.23 15
4 −3.01 9.19 15 −2.01 2.93 15
5 −2.29 2.32 15 −2.29 2.33 15
6 −1.93 3.83 15 −3.03 4.99 15
7 −1.75 5.41 15 −4.23 6.45 15
8 −2.71 9.61 14 −4.87 3.91 14
9 −2.71 5.99 15 −3.25 5.49 15
10 −1.17 3.37 15 −5.11 4.10 15
11 −2.39 5.28 15 −4.61 5.76 15
12 −1.05 6.76 15 −2.37 5.67 15
13 −3.51 8.52 15 −4.55 4.46 15
14 −1.21 3.63 15 −0.73 5.24 15
15 −1.91 6.84 15 −2.39 3.03 15
16 −1.71 6.44 15 −1.43 5.56 15
17 −3.27 6.53 15 −2.77 6.86 15
18 −2.97 6.17 15 −3.07 4.71 15
19 −2.61 8.56 15 −2.13 3.68 15
mean −2.31 6.56   −3.15 4.74