Tables of extended distances for PKP and PcP
John H. Hodgson, J F J Allen · 1954
Tables of extended distances for PKP1, PKP2 and PcP are presented, for surface focus and for focal depths ranging from 0.00R to 0.12R by steps of 0.01R. The tables are based on the Jeffreys-Bullen travel-time curves for the equivalent phases. They are consistent with earlier tables giving extended distances for P, so that the several phases can be used in a single solution.