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<br />l <br /> <br />fl70T <br />j,' '.J r <br /> <br />Table 10. - Significant long-term trends in mass fraction (%/ a) by log regression - Continued <br /> <br />PERIOD <br /> <br />SEASON <br /> <br />CALCIUM <br /> <br />MAGNESIUM <br /> <br />SODIUM <br /> <br />CHLORIDE <br /> <br />SlIlFATE <br /> <br />BICARBONATE <br /> <br />-------------------------.------.----.----------.---------.------------------------------------.---------------. <br /> <br /> SAN ,JUAN BA.StN <br />STATION 9379500 SAN JUAN RIVER NEAR BLUFF. UTAH <br />1929-61 DEe-MAR .020 .030 -.037 <br />c.> MAY-JUNE .028 - .01 f .026 <br /> AUG-NaV ,023 .021 .031 -.081 <br /> LOWER COLORADO BASIN <br />STATION 9380000 COLORADO R AT LEES FERRY. AZ. <br />1927-61 DEe-MAR .032 - .<>21 -.012 -.079 .045 <br /> MAY-JUNE .064 -.022 -.043 .021 - 121 .117 <br /> AVQ-NOV .056 -.022 -.053 -.127 .092 <br />STA TION 94.02500 COLORADO R. NEAR GRAND CANYON, <br />1925-"61 DEC-MAR .018 -.006 -.013 -.070 .052 <br /> MAY-JUNE .049 -.015 -.059 -.03" -.169 .188 <br /> AVG-NOV .028 -,O.c2 -.098 oa6 <br /> <br />