type 4 inter        -38.69     0.7644
type 4 slope    +3.741e-07  1.122e-07
type 2 inter        -37.33     0.1954
type 2 slope    +5.621e-07  2.844e-08
type 1 inter        -36.89     0.1149
type 1 slope    +6.191e-07  1.746e-08