https://bbs.pinggu.org/forum.php?mod=viewthread&tid=1581629&pid=39146501&page=2&extra=#pid39146501
跟这个类似

It obviously seems to be what is known to me as t-value. The t-ratio is the estimate divided by the standard error in frontier. High t-ratio usually means you have very small standard error (due to larger sample size and small sample standard deviation).

东财的校友啊