Table IV. Discriminating m/z-values for lesion vs. rostal/ caudal region obtained by ROC.

Centroid	±	Maximum AUC	m/z at maximum
86.005	0.245	0.744975	86.237
86.377	0.127	0.761224	86.263
86.686	0.182	0.674034	86.517
104.076	0.277	0.734237	104.328
104.630	0.277	0.727656	104.353
169.759	0.188	0.397301	169.921
170.055	0.108	0.458626	170.150
170.271	0.108	0.759526	170.278
170.456	0.076	0.691658	170.379
170.720	0.188	0.557438	170.532
174.917	0.258	0.394923	175.163
175.398	0.223	0.739125	175.392
175.885	0.264	0.251686	176.130
184.068	0.300	0.750433	184.322
191.828	0.300	0.239038	192.108
192.352	0.163	0.737723	192.261
192.678	0.163	0.186462	192.821
213.801	0.264	0.299782	214.066
214.244	0.178	0.749835	214.244
214.636	0.214	0.50978	214.422
221.982	0.277	0.721014	222.259
222.536	0.277	0.743943	222.310
240.018	0.300	0.622719	240.298
240.629	0.300	0.755234	240.400
782.731	0.300	0.643802	782.756
783.698	0.300	0.64038	783.748
798.684	0.300	0.61345	798.735
799.702	0.300	0.616393	799.727