# Position Specific Reference Distribution (PSRD) - a lone position counts as a global distribution
A	R	N	D	C	Q	E	G	H	I	L	K	M	F	P	S	T	W	Y	V
0.0755236	0.0515842	0.0453131	0.0530344	0.0169811	0.0402483	0.0632002	0.0684442	0.0224067	0.0573156	0.0934327	0.0594192	0.0235696	0.0407819	0.0492775	0.0722465	0.0574747	0.0125173	0.0319968	0.0652477