用heckprob 命令跑了数据，请问下面该怎么解读？
命令：heckprob y1 x1 x2 x3 x4 ,select(y2=x1 x2 x3)
感谢各位前辈、大佬的指点

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     /athrho |  -3.071458   .1992985   -15.41   0.000    -3.462076    -2.68084
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         rho |  -.9957119   .0017056                     -.9980345   -.9906578
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LR test of indep. eqns. (rho = 0):   chi2(1) =   242.86   Prob > chi2 = 0.0000