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<br />8201 <br /> <br />Table 12. - Significant long-term trends in mass fraction (%/a) with highest confidence levels of the <br />different regressions - Continued <br /> <br />PERIOD <br /> <br />----------------------~-------------------------~-------------------------~------------------------------------. <br /> <br />SEASON <br /> <br />CAlCJUM <br /> <br />MAGNESIUM <br /> <br />SODIUM <br /> <br />CHlOIU DE <br /> <br />SULFATE <br /> <br />BICARBONATE <br /> <br />---------------------------------------------------------------------------------------------------------------- <br /> <br /> SAN JUAN BASIN <br /> STATION 9379500 SAN JUAN RIVER NEAR BLUFF , UTAH <br />W 1929-5t DEe-MAR -.020 .032 -.042 <br />U1 MAY-JUNE .028 -.012 .028 <br /> AUG-NOV -.028 031 .033 -.08 f <br /> LOWER COLORADO BASIN <br /> STA T1 ON 9380000 COLORADO . AT LEES FERRY, AZ. <br /> 1927-61 DEe-MAR .043 -.026 - .Ot6 -.09S .059 <br /> MAY-JUNE .083 -.028 -.056 -.026 - 157 .151 <br /> AUG-NDV .070 -.030 -.065 -.150 .092 <br /> STATION 9402500 COLORADO R. NEAR GRANO CANYON, <br /> 1925-61 DEC-MAR .021 -.007 -.013 -.074 .052 <br /> MAY-JUNE .049 .016 -.059 .034 -.169 .IBe <br /> AUG-NQV .030 -.007 -.044 -.103 .086 <br /> <br />