type 4 inter        +8.938       2.38
type 4 slope    +2.076e-06  3.097e-07
type 2 inter        +8.719      2.308
type 2 slope    +2.196e-06  3.051e-07
type 1 inter        +11.36      1.444
type 1 slope    +1.829e-06  1.522e-07