S. no.	eU (ppm)	eTh (ppm)	U_ch (ppm)	Th_ch (ppm)	U_ch/eU	S. no.	eU (ppm)	eTh (ppm)	U_ch (ppm)	Th_ch (ppm)	U_ch/eU
1t	65	33	99	100	1.5	15t	167	62	214	114	1.3
2	53	55	80	99	1.5	16	74	26	71	100	0.9
3	64	45	93	90	1.4	17t	66	23	81	135	1.2
4t	40	28	60	100	1.5	18t	104	54	117	211	1.1
5	95	44	112	182	1.2	19	77	41	77	94	1.0
6	42	31	51	150	1.2	20t	79	54	102	160	1.3
7	45	37	68	90	1.5	21	164	70	198	220	1.2
8t	155	61	200	115	1.3	22t	75	48	101	200	1.3
9t	55	21	59	70	1.1	23	88	54	89	120	1.0
10	72	33	89	100	1.2	24	185	105	204	230	1.1
11t	101	52	130	100	1.3	25t	210	120	223	109	1.1
12	91	44	100	100	1.1	26	130	52	155	180	1.2
13t	98	50	117	151	1.2	27t	145	62	179	150	1.2
14t	106	48	110	155	1.0	28	150	77	208	100	1.4