Depth vs. velocity and two-way traveltime data of Hole PRGL1-4

This dataset is about: Depth vs. velocity and two-way traveltime data of Hole PRGL1-4.本数据集涵盖以下内容：PRGL1-4钻孔的深度-速度对应数据与双程旅行时（two-way traveltime）数据。