type 4 inter           -20      5.593
type 4 slope    +1.269e-05  3.549e-06
type 2 inter        -37.97      0.199
type 2 slope    +5.837e-07  5.692e-08
type 1 inter        -39.12     0.1531
type 1 slope    +2.218e-07  5.719e-08