We minimise the χ2 χ2=∑i(ΔEpredicted2−ΔElatt2)2σ2
χ2/d.o.f.=0.721013P[0]=−0.15117±(0.0015)P[1]=−3.11194±(0.13) {C=(10.00110.00111)}
χ2/d.o.f.=1.41221P[0]=−0.151389±(0.0017) {C=(1)}