Table 1. Values of a - b and a at Deptha


Depth (km)	a - b	a

0	0.004	0.0136575
2.9	-0.004	0.0186575
15.7	-0.004	0.0311575
19	0.025	0.0336575
40	0.06	0.0386575

aLinear interpolation was applied between pivotal points.