'codep2.dat: Refracted P wave, waves reflected at 1st and 2nd interface' / 5 1 1 1 1 1 1 1 1 1 1 / (Reflection-transmission code, refracted wave) 5 1 2 1 1 1 1 1 1 1 1 / (Reflection-transmission code, reflected wave) 5 1 1 2 1 1 1 1 1 1 1 / (Reflection-transmission code, reflected wave) /