type 3 inter        -1.856      10.96
type 3 slope    +5.304e-06  1.476e-06
type 2 inter           -21      5.593
type 2 slope    +2.823e-06  7.518e-07
type 1 inter         -20.5      5.593
type 1 slope    +2.759e-06  7.526e-07