Table 1.

Angles of elevation and azimuth for the eigenvectors of D and the negative and positive principal strains of E

Compartment	Angle
Deep	Elevation	69.3 ± 2.3	48.2A ± 1.5	−20.2 ± 2.3	−41.4B ± 1.6	−0.6 ± 1.7
	Azimuth	34.8 ± 4.7	40.5 ± 6.2	37.1 ± 3.8	42.6 ± 5.6	−53.1 ± 3.6
Superficial	Elevation	66.1 ± 6.6	40.4A ± 1.7	−21.4 ± 6.7	−42.8B ± 2.0	−0.9 ± 2.7
	Azimuth	−144.9 ± 7.7	−105.8 ± 18.3	−135.7 ± 3.7	−91.6C ± 16.8	−44.7 ± 2.7

All angles are given in degrees. Superscripts denote levels of statistical significance. Figure 8 provides a graphical illustration of the data for ε_N, ε_P, , , , and and a depiction of the sign conventions for the elevation and azimuth angles.

^AP < 0.001 vs. mean elevation angle for ;

^BP < 0.001 vs. mean elevation angle for ;

^CP < 0.001 vs. mean azimuth angle for .