Table 1. Statistical Results.

Program	No. Peptides	No. Blocked Peptides	No. Unblocked Peptides	No. Cyclic Peptides	Total		Blocked		Unblocked		Cyclic
					r2	RMSE	r2	RMSE	r2	RMSE	r2	RMSE
XLogP	335	140	157	38	0.428	2.253	0.665	1.009	0.158	3.043	0.665	1.648
LogKow	339	141	158	40	0.277	2.315	0.389	1.709	0.063	2.781	0.970	2.141
ACDLogP	336	140	156	40	0.232	2.663	0.587	1.278	0.166	3.443	0.462	2.734
AlogP	335	138	157	40	0.822	1.211	0.382	0.673	0.394	0.897	0.946	0.457
IALogP	339	141	157	41	0.422	1.772	0.497	1.209	0.409	0.869	0.399	4.272
MLogP	338	140	158	41	0.090	2.351	0.060	1.402	0.170	2.272	0.661	4.411
QikProp	327	134	154	39	0.502	1.665	0.384	1.285	0.560	1.081	0.535	3.643
PLogP	44	17	27		0.482	1.267	0.800	1.040	0.009	1.391