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
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 | ||