Statistical Summary of Daily Values Data and Trend Analysis of Dissolved-Solids Data at National Stream Quality Accounting Network (NASQAN) Stations Page: 31
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TABLE 3.--STATISTICAL SUMMARY OF DAILY VALUES DATA AND TREND ANALYSIS OF
DISSOLVED SOLIDS DATA COLLECTED AT NASQAN STATIONS IN ARIZONA--CONTINUED
STATION NUMBER: 09426600 STATION NAME AND LOCATION: BILL WILLIAMS RIVER NEAR PLANET, ARIZ.
LATITUDE-LONGITUDE: 341543 1140140 DRAINAGE AREA: 5140 SQUARE MILES
PERCENT OF SAMPLES IN WHICH VALUES
DESCRIPTIVE STATISTICS WERE LESS THAN OR EQUAL TO THOSE SHOWN
SAMPLE STANDARD MEDIAN
PARAMETER SIZE MAXIMUM MINIMUM MEAN DEVIATION 95 75 50 25 5
TEMPERATURE (DEG C) INST 2115 35.00 5.00 19.37 5.74 29.00 23.00 19.00 16.00 9.90
CONDUCTANCE (UMIOS) INST 2192 1120.00 292.00 766.85 220.86 1020.00 963.00 803.00 531.25 407.65
PERIOD OF RECORD ON WHICH STATISTICAL
CALCULATIONS WERE BASED FOR EACH PARAMETER
PARAMETER PERIOD OF RECORD
TEMPERATURE (DEG C) INST NOV 1974 TO SEPT 1981
CONDUCTANCE (UMHOS) INST NOV 1974 TO SEPT 1981
DISSOLVED SOLIDS FOR THIS STATION MAY BE ESTIMATED FROM SPECIFIC CONDUCTANCE
USING THE FOLLOWING EQUATION:
DISSOLVED SOLIDS (MG/L) = 31.00+(0.5614 X SPECIFIC CONDUCTANCE)
R SQUARE FOR THE ABOVE EQUATION IS 0.953 AND THE STANDARD ERROR OF ESTIMATE IS 27.7 MG/L.
THE REGRESSION BETWEEN THE ADJUSTED RESIDUALS CONCENTRATION AND TIME WAS NOT SIGNIFICANT AT
THE 95-PERCENT CONFIDENCE LEVEL, INDICATING NO TREND COULD BE DETECTED IN DISSOLVED-SOLIDS
CONCENTRATIONS WITH TIME. A PLOT OF THE ADJUSTED RESIDUALS CONCENTRATIONS AND THE PREDICTED
REGRESSION EQUATION IS SHOWN BELOW:
PLOT OF ADJUSTED RESIDUAL CONCENTRATIONS VERSUS DECTIME
PLOT OF ADJC*DECTIME SYMBOL USED IS 0
PLOT OF PR*DECTIME SYMBOL USED IS *
650 + 0
I0
600 + O
0 O
A 0 0
D I 0 0 0
J 550 + 00 0 0
U I 0 0 0
S [
T I0 0 0
E I 0 0 0 0 0
D 500 + 0
I 0 0 0 0 0 0
R I 0 0 0
E I 00 0 ** *** *** 0* **** *** *** ** *** *** *** **0 ** *** *** ** *
S * *** **** *** *** **** *** **** ** *** * 0 0
1450 + 0 0 0 00
D O O 0 0
U O 0 0 0 0
A 0 0 0 0
L 0 0 0
400 + 0
C I 0 0
0 0
N 0 0 0
C 0 0
350 +
f 0 0
N I
G 0
/ 300 +
L I O
) 0
250 +
200 +
------ +-----------+-----+-----+-----+-----+------+-----+-----+----
1974.50 1975.25 1976.00 1976.75 1977.50 1978.25 1979.00 1979.75 1980.50 1981.25
TIME, IN YEARS-31-
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Wells, Frank C. & Schertz, Terry L. Statistical Summary of Daily Values Data and Trend Analysis of Dissolved-Solids Data at National Stream Quality Accounting Network (NASQAN) Stations, report, 1983; United States. (https://digital.library.unt.edu/ark:/67531/metadc968428/m1/51/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.