type 4 inter        -17.66     0.9564
type 4 slope    -1.586e-06  4.929e-07
type 2 inter        -21.23      0.336
type 2 slope     -3.15e-06  1.711e-07
type 1 inter         -13.7    0.09338
type 1 slope    +2.629e-07  5.161e-08