Estimate Std. Error t value  Pr(>|t|)
(Intercept) 0.018100   0.004911  3.6856 0.0002281 ***
MAX_1       0.030758   0.034241  0.8983 0.3690355

MAX sort return
  low MAX_1 0.675
    port2   0.760
    port3   1.920
    port4   1.538
    port5   1.974
    port6   2.154
    port7   2.543
    port8   2.548
    port9   2.949
 High MAX_1 4.506
  diff 10-1 3.832***
    t      (3.231)