Table 1.

Concentrations of Fluoride and Temperature (°C) in drinking water collected from sistan and baluchestan.

Counties	Season	Mean	Min	Max	S.D.	Mean T(°C)	Min T(°C)	Max T(°C)	S.D.
Khash N = 66	Spring	0.73	0.28	1.46	0.32	30.1	23	38	3.05
	Summer	0.77	0.38	1.11	0.23	29.3	24	35	3.27
	Fall	0.58	0.39	1.71	0.2	17.3	13	38	3.4
	Winter	0.86	0.38	1.51	0.33	8.9	7	12	1.36
Saravan N = 174	Spring	0.5	0.19	0.87	0.187	38.1	32	42	2.35
	Summer	0.59	0.24	1.39	0.243	30.9	20	39	5.69
	Fall	0.5	0.01	1	0.18	19.4	12	30	4.7
	Winter	0.56	0.15	1.33	0.21	10.8	7	15	2.6
Sarbaz N = 109	Spring	0.39	0.19	0.75	0.143	31	24	36	4.05
	Summer	0.32	0.02	0.71	0.149	32.4	24.6	47	5.3
	Fall	0.3	0.01	0.5	0.18	27.5	25	35	3.45
	Winter	0.32	0.21	0.53	0.07	19.1	12	25	4.9
Iranshahr Na = 106	Spring	0.57	0.21	1.26	0.02	38	18	36	4.55
	Summer	0.79	0.44	1.7	0.36	36.2	29	45	4.4
	Fall	0.51	0.23	0.87	0.165	24.7	20	32	2.78
	Winter	0.61	0.35	1.15	0.19	15.6	12	21	2.01
Nikshahr N = 96	Spring	0.4	0.14	0.67	0.15	31.6	24	39	5.1
	Summer	0.48	0.22	0.76	0.16	33	28	38	4.25
	Fall	0.44	0.19	1.55	0.29	26.5	20	39	4.1
	Winter	0.41	0.14	0.94	0.16	18	12	25	3.1