. 2008 Oct 7;117(3):410–416. doi: 10.1289/ehp.11886

Table 2.

Correlation coefficients (r) for the concentrations of toxic elements in tube well water from Bualda, Fulbaria, Jamjami, and Komlapur, along with characteristics of these tube wells.

	As	B	Ba	Cr	Fe	Mn	Mo	Ni	Pb	Sb	Se	U	Zn	pH	Depth	Age	Users
As	1.00^a
B	0.81^a	1.00^a
Ba	0.26^b	0.40^a	1.00^a
Cr	0.82^a	0.92^a	0.30^b	1.00^a
Fe	0.82^a	0.92^a	0.40^a	0.97^a	1.00^a
Mn	0.46^a	0.31^b	0.19	0.26^b	0.21	1.00^a
Mo	0.28^b	0.05	0.16	−0.03	−0.01	0.28^b	1.00^a
Ni	0.13	0.07	0.07	0.10	0.09	−0.09	−0.05	1.00^a
Pb	0.83^a	0.94^a	0.33^a	0.98^a	0.96^a	0.28^b	−0.02	0.09	1.00^a
Sb	0.34^a	0.33^a	0.56^a	0.24	0.31^b	0.38^a	0.29^b	0.40^a	0.28^b	1.00^a
Se	0.32^a	0.31^b	0.48^a	0.30^b	0.32^a	0.31^b	0.10	0.11	0.35^a	0.30^b	1.00^a
U	−0.02	0.07	−0.27^b	0.04	−0.05	0.18	−0.21	−0.02	0.08	0.04	0.09	1.00^a
Zn	0.67^a	0.69^a	0.29^b	0.73^a	0.74^a	0.15	0.19	0.03	0.70^a	0.21	0.29^b	−0.14	1.00^a
pH	−0.02	−0.01	−0.11	0.02	0.00	0.05	−0.10	−0.20	0.03	−0.24	0.07	0.07	0.05	1.00^a
Depth	−0.10	−0.07	−0.17	0.00	−0.06	0.06	−0.15	−0.22	0.01	−0.28^b	−0.19	0.18	0.01	0.10	1.00^a
Age	−0.08	−0.03	−0.03	−0.05	−0.02	0.02	−0.17	−0.11	−0.03	0.01	0.16	0.27^b	−0.17	0.11	−0.13	1.00^a
Users	−0.07	−0.06	−0.11	−0.05	−0.06	−0.08	−0.07	−0.03	−0.04	−0.04	0.05	0.16	−0.12	0.07	0.02	0.10	1.00^a

Linear relationships without a footnote are not significant at either confidence level.

Significant linear relationships at the 99% confidence level.

Significant linear relationships at the 95% confidence level.