segment,lo_m2,hi_m2,elasticity,se,r2_spline,r2_quadratic,r2_linear
1,45.61502929999999,86.86365049999999,0.5706277755544353,0.021296065470088846,0.7767089211414695,0.7764569407005814,0.7756471970293983
2,86.86365049999999,113.34080599999999,0.6495179850496777,0.02113976504245838,0.7767089211414695,0.7764569407005814,0.7756471970293983
3,113.34080599999999,148.55077770000005,0.584146094046499,0.02204446306274184,0.7767089211414695,0.7764569407005814,0.7756471970293983
4,148.55077770000005,209.40178419999998,0.40879164784371097,0.01652240639333227,0.7767089211414695,0.7764569407005814,0.7756471970293983
5,209.40178419999998,464.5115000000001,0.4767736084297653,0.013447352613448635,0.7767089211414695,0.7764569407005814,0.7756471970293983