PAST

PAST是一种易于使用的数据分析工具，最初目的是研究古生物学，但目前也有其他领域的扩展。它包括共同统计，绘图和建模功能。

PAST is a free, easy-to-use data analysis package originally aimed at paleontology but now also popular in many other fields. It includes common statistical, plotting