We minimise the χ2 χ2=∑i(ΔEpredicted2−ΔElatt2)2σ2
χ2/d.o.f.=2.32387P[0]=−0.141931±(0.00034)P[1]=−2.94882±(0.044) {C=(1.18e−070.5490.5490.00191)}