Three hundred and forty-seven observations from four suitable deep focus (0.026R) earthquakes of Central Asian region have heen studied as a first step towards constructing regional travel-time tables for Central Asia.
Times calculated for the earthquakes of this region have been compared with European Times and Jeffreys-Bullen times. Residuals with respect to European times show hoth negative and positive trend whereas with respect to Jeffreys and Bullen times they are negative for most of the distances. Calculated times show closer agreement with European times than with Jeffreys-Bullen times for most of the ranges of distances.