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<br />0241 <br /> <br />a: <br />w <br />I- <br />:0 <br />a: <br />w <br />0- <br />'" <br />'" <br />< <br />a: <br />to <br />:0 <br />~ <br />'" <br />:;:: <br />z <br />w <br />8 <br />a: <br />I- <br />Z <br />'" <br />< <br />z <br />o <br />;:: <br />< <br />a: <br />I- <br />z <br />W <br />" <br />~ <br />" <br />W <br />I- <br />< <br />a: <br />I- <br />Z <br />'" <br />:> <br />~ <br />0- <br />W <br />l- <br />ii: <br />I- <br />~ <br />~ <br />< <br />~ <br /> <br />0.005 <br /> <br />0.002 <br /> <br />0.001 <br />#'~ <br />y. <br /> <br />0.5 (25) <br /> <br />0.2 <br /> <br />0.1 <br /> <br />0.05 <br /> <br />0.02 <br /> <br />0.01 <br /> <br />50 <br /> <br />20 <br /> <br />10 <br /> <br />5 <br /> <br />2 <br /> <br />Upper Arkansas River Basin <br /> <br />Lower Arkansas River Basin <br /> <br />(25) <br />o <br /> <br />Number 01 ObsBrvaltOIlS <br />Outhor data value more lhan 3 limes the <br />ultorQUarWe range outside the quartJle <br />Outlier data value less than or equal to 3 <br />ll.nd'morethan 1.5bmeslhe <br />lnt~aJ1l1e lanoe outside the qua1'Ule <br />Data value ISS!llhan or equal 10 1_5 times the <br />inlBrquartile range outside the quartile <br />75th percenble <br />Medtan <br /> <br />~J <br /> <br />(24) <br /> <br />(24) <br /> <br />* <br /> <br />(24) <br />(24) <br />T <br /> <br />(24) <br /> <br />(24) <br /> <br />~ <br /> <br />25th percentile <br /> <br />(25) <br /> <br />: (26) <br /> <br />(25) <br /> <br />(26) : <br /> <br />(26) <br />(26) <br /> <br />(26) (26) <br /> <br />(26) <br /> <br />(27) <br />* <br /> <br />125) <br /> <br />it" .", .-9> <fI d~ ..~ #' c,"" ~,I>' v>'" 1P ~"'-",\. oS" ~; r;t6' ",' <br />~~~~~~4~'~~"~~~'~ <br />#' c,"'. /'?' ~4" t' c,'" -.:I' #'?',#' <br />,~ .pf'~ c,aY- <br />'11''''" <br /> <br />Figure 27, Variations in total-nitrite plus nitrate concentrations in the Arkansas River. April 199O-March 1993. <br /> <br />WATER QUALITY 55 <br />