Table I.
Mean density of the three orientation groups at each depth point of the optical axis.
| 150º | 90º | 30º | |||||||
|---|---|---|---|---|---|---|---|---|---|
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| Depth, mm | n | Mean | SD | n | Mean | SD | n | Mean | SD |
| 0.5 | 412 | 13.712 | 9.2856 | 411 | 14.460 | 10.5877 | 405 | 13.439 | 9.3138 |
| 1.0 | 408 | 18.621 | 8.3560 | 403 | 19.800 | 9.8208 | 408 | 18.465 | 8.5854 |
| 1.5 | 414 | 16.964 | 7.5371 | 412 | 17.770 | 8.2408 | 412 | 16.720 | 6.007 |
| 2.0 | 421 | 14.564 | 6.0807 | 421 | 15.410 | 7.1814 | 417 | 14.483 | 5.9297 |
| 2.5 | 421 | 11.445 | 4.3968 | 422 | 12.277 | 4.5001 | 421 | 11.570 | 4.2786 |
| 3.0 | 421 | 8.815 | 3.1971 | 422 | 9.730 | 3.2123 | 421 | 8.994 | 3.0838 |
| 3.5 | 421 | 6.592 | 2.2155 | 422 | 7.543 | 2.2943 | 421 | 6.856 | 2.2014 |
| 4.0 | 421 | 5.177 | 1.5762 | 422 | 5.909 | 2.0259 | 421 | 5.442 | 2.0488 |
SD, standard deviation.