#TITLE: Mode hunting
#DESCRIPTION:	Data from proficiency tests, used in published demonstration of mode-hunting with the EM algorithm.
#VARIABLES:	Concentrations of: PUFA=polyunsaturated fatty acids, nickel, tin
#UNITS:	PUFA; mass fraction times 10^2 (% by mass)
#UNITS:	Nickel; mass fraction times 10^6 (ppm)
#UNITS:	Tin; mass fraction times 10^6
#REFERENCE_VALUES: 	Tin only; by ICP-IDMS; 286.5 (U=3.5)
#APPLICATION_SECTOR:	Food, geology
#ANALYTE: 	PUFA, Ni, Sn
#MATRIX_TYPE:	PUFA; Fat spread: Sn; tomato paste: Ni; volcanic glass
#RATIONALE:	Proficiency testing
#DATA_TYPE:	Experimental
#DATA_STRUCTURE:	Simple
#CONDITIONS:	Reproducibility
#ORIGIN:	 FAPAS, GeoPT
#DATE_OF_ORIGIN: 2006
#AUTHOR: M Thompson
#AUTHOR_ADDRESS:	Birkbeck College, Malet Street, London WC1E 7HX.	 
#LITERATURE_REFERENCES: 	Accred Qual Assur 2006, 10, 501-505.

PUFA	Tin	Nickel
40.7	203	143
39	218	319
40.8	220	320
38.633	226	282
39	228	255
40.9	233	170
39.3	242	317.717
39.6	243	294.132
39.4	243.7	330.5
39.1	244	242.626
39.9	246	300
39.1	247	316.25
40.079	247.162	334.5
39.4	247.95	300.733
40.7	248	316
40.2	251	211.952
40.75	252	165.25
38.835	255	329.213
39.8	256	175
38.6	260	
40	263	
40.3	265	
39.22	265	
39.04	266	
39.3	272	
40.5	272	
39.5	273.79	
40.7	277	
39.3	279	
39.2	279.3	
39.5	280	
41.132	280
38.9	281
40.43	284
39.3	285
39.5	290.2
39.1	296
39.6	
39.44	
40.5	
39.8	
41