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<br />. i <br />i <br /> <br />. <br /> <br />. <br /> <br /> <br />wh~re Sa : specific conductance of instantaneous sample a, and <br />, Sk: specific conductance measured on day k. <br /> <br />Jh.. period represented by a given sample includes all days halfway <br />~ batk to the previous sample date and halfway ahead to the next <br />~ 00*. ' <br />w <br />~ Method 5. ~ Category 3 data, no daily specific conductance: <br /> <br />- Es~imate missing values of Sk using the average ratio of known <br />coqductance (S) and streamflow (Q) on either side of the missing <br />value and the known discharge on day k. . <br /> <br />S : 1/2 (;-1 + Sk+" 7 Q <br />k L 1&-1 Qk~/"] k <br /> <br />If,several consecutive values are missing, use a regression of <br />conduotance on streamflow including at least as many values on <br />ei~her side of the missing values as are missing. If an entire <br />mo~h of data is missing, that month will be excluded from the <br />ana'lys is. <br /> <br />- C~ute TOSa, Pi, and Cik as in method 4. <br /> <br />Once Ci kl has been eval uated for all days in the period of record, <br />monthly flow weighted averages are computed for all months (m). <br /> <br />.- <br /> <br />eim = <br /> <br />n <br />k=1 eik Qk <br />n <br />k=1 Qk <br /> <br />where n . number of days in the month. <br /> <br /> <br />Monthly ,verage streamflow (Qm, m3/s) is also computed <br /> <br />n <br />t Qk <br />~ = 0.0283 k:ln <br /> <br />where Qk ,is reported daily discharge (ft3/s). <br /> <br />,1 <br /> <br />efm and Qm are then used to make all additional computations and in <br />the stadstical analysis. , <br /> <br />,~: <br /> <br />-, <br />i <br /> <br />'<f <br />i <br />, <br /><~t <br />,.~- <br />-, <br />:-1 <br /> <br />. i":. ~; ;.. .-,.-. <br /> <br />'_" C, _,J,.~, , - <br />. . '~, :1."- ~... _.h.. ". <br /> <br />",t.,t.;" <br /> <br />:..1>, ,.t,;.,,,,o '.-<--.. . <br /> <br /> <br />. <br /> <br />5 <br /> <br />. <br />