Table 2. Regression results for sensitivity as a function of depth.
SD | Model | Coef. | Std. | 95% Conf. Interval | N | Sensitivity at Depth (mm) | |||||
Sep. | Param | Value | Err. | T | p | Low | High | Adj. R2 | 0 | 5 | 10 |
5 | a | 0.0000 | 0.0001 | −0.6 | 0.550 | −0.0002 | 0.0001 | 378 | |||
b | 0.0058 | 0.0003 | 19.3 | 0.000 | 0.0052 | 0.0064 | 0.526 | 0.58% | 0.19% | 0.06% | |
c | 0.8042 | 0.0185 | 43.4 | 0.000 | 0.7678 | 0.8406 | |||||
10 | a | −0.0001 | 0.0001 | −0.7 | 0.491 | −0.0004 | 0.0002 | 399 | |||
b | 0.0133 | 0.0005 | 25.3 | 0.000 | 0.0123 | 0.0143 | 0.647 | 1.32% | 0.48% | 0.17% | |
c | 0.8176 | 0.0132 | 62.1 | 0.000 | 0.7917 | 0.8435 | |||||
15 | a | −0.0002 | 0.0003 | −0.7 | 0.458 | −0.0007 | 0.0003 | 399 | |||
b | 0.0261 | 0.0009 | 27.8 | 0.000 | 0.0243 | 0.0280 | 0.687 | 2.59% | 1.00% | 0.38% | |
c | 0.8292 | 0.0113 | 73.6 | 0.000 | 0.8071 | 0.8514 | |||||
20 | a | −0.0003 | 0.0004 | −0.9 | 0.392 | −0.0011 | 0.0004 | 399 | |||
b | 0.0431 | 0.0013 | 32.7 | 0.000 | 0.0405 | 0.0457 | 0.753 | 4.27% | 1.74% | 0.70% | |
c | 0.8377 | 0.0091 | 91.8 | 0.000 | 0.8198 | 0.8557 | |||||
25 | a | −0.0005 | 0.0005 | −1.0 | 0.341 | −0.0015 | 0.0005 | 399 | |||
b | 0.0614 | 0.0017 | 36.5 | 0.000 | 0.0581 | 0.0647 | 0.793 | 6.09% | 2.59% | 1.09% | |
c | 0.8448 | 0.0078 | 107.8 | 0.000 | 0.8294 | 0.8602 | |||||
30 | a | −0.0006 | 0.0006 | −1.1 | 0.276 | −0.0018 | 0.0005 | 399 | |||
b | 0.0781 | 0.0019 | 41.6 | 0.000 | 0.0744 | 0.0818 | 0.832 | 7.74% | 3.37% | 1.44% | |
c | 0.8483 | 0.0067 | 125.7 | 0.000 | 0.8350 | 0.8616 | |||||
35 | a | −0.0008 | 0.0006 | −1.2 | 0.221 | −0.0020 | 0.0005 | 399 | |||
b | 0.0913 | 0.0020 | 45.8 | 0.000 | 0.0873 | 0.0952 | 0.857 | 9.05% | 4.01% | 1.75% | |
c | 0.8514 | 0.0060 | 141.5 | 0.000 | 0.8395 | 0.8632 | |||||
40 | a | −0.0009 | 0.0006 | −1.3 | 0.182 | −0.0021 | 0.0004 | 399 | |||
b | 0.1018 | 0.0021 | 49.3 | 0.000 | 0.0977 | 0.1059 | 0.875 | 10.09% | 4.51% | 1.99% | |
c | 0.8528 | 0.0055 | 154.1 | 0.000 | 0.8419 | 0.8637 | |||||
45 | a | −0.0009 | 0.0007 | −1.4 | 0.165 | −0.0022 | 0.0004 | 399 | |||
b | 0.1095 | 0.0021 | 51.5 | 0.000 | 0.1054 | 0.1137 | 0.883 | 10.86% | 4.89% | 2.17% | |
c | 0.8542 | 0.0053 | 162.3 | 0.000 | 0.8438 | 0.8645 | |||||
50 | a | −0.0010 | 0.0007 | −1.4 | 0.163 | −0.0023 | 0.0004 | 399 | |||
b | 0.1157 | 0.0022 | 52.7 | 0.000 | 0.1114 | 0.1200 | 0.889 | 11.47% | 5.20% | 2.33% | |
c | 0.8554 | 0.0051 | 167.9 | 0.000 | 0.8454 | 0.8655 | |||||
55 | a | −0.0010 | 0.0007 | −1.5 | 0.134 | −0.0024 | 0.0003 | 378 | |||
b | 0.1231 | 0.0022 | 54.8 | 0.000 | 0.1187 | 0.1276 | 0.901 | 12.21% | 5.45% | 2.40% | |
c | 0.8528 | 0.0050 | 171.2 | 0.000 | 0.8430 | 0.8626 | |||||
60 | a | −0.0011 | 0.0007 | −1.5 | 0.132 | −0.0025 | 0.0003 | 378 | |||
b | 0.1264 | 0.0023 | 56.0 | 0.000 | 0.1219 | 0.1308 | 0.905 | 12.53% | 5.65% | 2.52% | |
c | 0.8545 | 0.0048 | 176.9 | 0.000 | 0.8450 | 0.8640 | |||||
65 | a | −0.0011 | 0.0007 | −1.6 | 0.112 | −0.0025 | 0.0003 | 357 | |||
b | 0.1321 | 0.0023 | 57.6 | 0.000 | 0.1275 | 0.1366 | 0.914 | 13.09% | 5.81% | 2.54% | |
c | 0.8518 | 0.0048 | 178.6 | 0.000 | 0.8425 | 0.8612 |