Log-Pearson Type III Statistics
Notice -- Use of Log-Pearson Type III or Pearson-Type III
distributions are for preliminary computations.
User is responsible for assessment and
interpretation.
05040500 - streamflow gaging station
1-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1910 - 1981 - time period
35 - non-zero values
4 - zero values
33 - years with missing values (not used)
0.900 1.000 1.500 34.000 15.000
1.200 13.000 44.000 25.000 44.000
13.000 25.000 1.200 38.000 25.000
46.000 6.400 0.900 26.000 12.000
21.000 44.000 55.000 1.100 33.000
12.000 10.000 26.000 40.000 15.000
29.000 54.000 2.700 1.800 54.000
The following 7 statistics are based on non-zero values:
Mean (logs) 1.067
Variance (logs) 0.383
Standard Deviation (logs) 0.619
Skewness (logs) -0.798
Standard Error of Skewness (logs) 0.398
Serial Correlation Coefficient (logs) 0.070
Coefficient of Variation (logs) 0.580
Non- Adjusted Non- Adjusted
exceedance Recurrence Estimated exceedance Estimated
Probability Interval Streamflow Probability Streamflow
----------- ----------- --------- ----------- ---------
0.0100 100.00 0.190 0.1115 0.000
0.0200 50.00 0.354 0.1205 0.000
0.0500 20.00 0.849 0.1474 0.000
0.1000 10.00 1.738 0.1923 0.000
0.2000 5.00 3.841 0.2821 1.860
0.5000 2.00 14.086 0.5513 11.453
0.8000 1.25 39.554 0.8205 36.435
0.9000 1.11 61.527 0.9103 58.497
0.9600 1.04 92.071 0.9641 88.559
0.9800 1.02 115.362 0.9821 111.882
0.9900 1.01 138.247 0.9910 135.417
Note -- Adjusted parameter values include zero values
and correspond with non-exceedance probabilities
in column 1 and recurrence interval in column 2.
Estimated values in column 3 are based on
non-zero values.
===============================
Log-Pearson Type III Statistics
(based on USGS Program A193)
Notice -- Use of Log-Pearson Type III or Pearson-Type III
distributions are for preliminary computations.
User is responsible for assessment and
interpretation.
05040500 - streamflow gaging station
7-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1910 - 1981 - time period
35 - non-zero values
4 - zero values
33 - years with missing values (not used)
2.000 2.000 9.714 39.429 34.286
1.271 13.429 45.286 25.000 44.429
18.857 25.000 1.214 38.429 25.000
48.143 6.400 0.900 26.286 12.714
21.429 44.571 56.143 1.100 33.000
12.571 10.857 26.571 40.571 17.000
29.000 54.000 3.229 1.800 54.429
The following 7 statistics are based on non-zero values:
Mean (logs) 1.136
Variance (logs) 0.328
Standard Deviation (logs) 0.572
Skewness (logs) -0.923
Standard Error of Skewness (logs) 0.398
Serial Correlation Coefficient (logs) -0.034
Coefficient of Variation (logs) 0.504
Non- Adjusted Non- Adjusted
exceedance Recurrence Estimated exceedance Estimated
Probability Interval Streamflow Probability Streamflow
----------- ----------- --------- ----------- ---------
0.0100 100.00 0.272 0.1115 0.000
0.0200 50.00 0.501 0.1205 0.000
0.0500 20.00 1.173 0.1474 0.000
0.1000 10.00 2.338 0.1923 0.000
0.2000 5.00 4.976 0.2821 2.495
0.5000 2.00 16.689 0.5513 13.797
0.8000 1.25 42.091 0.8205 39.148
0.9000 1.11 61.602 0.9103 58.978
0.9600 1.04 86.210 0.9641 83.500
0.9800 1.02 103.411 0.9821 100.912
0.9900 1.01 119.190 0.9910 117.272
Note -- Adjusted parameter values include zero values
and correspond with non-exceedance probabilities
in column 1 and recurrence interval in column 2.
Estimated values in column 3 are based on
non-zero values.
===============================
Log-Pearson Type III Statistics
(based on USGS Program A193)
Notice -- Use of Log-Pearson Type III or Pearson-Type III
distributions are for preliminary computations.
User is responsible for assessment and
interpretation.
05040500 - streamflow gaging station
30-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1910 - 1981 - time period
35 - non-zero values
4 - zero values
33 - years with missing values (not used)
2.000 2.000 13.467 57.200 39.000
1.640 15.767 47.167 25.633 51.433
19.533 25.367 2.240 40.800 26.033
50.333 6.843 0.973 28.900 14.267
23.567 47.633 58.900 1.410 34.433
14.533 12.333 33.600 41.733 22.267
29.000 54.633 4.040 1.910 58.567
The following 7 statistics are based on non-zero values:
Mean (logs) 1.189
Variance (logs) 0.308
Standard Deviation (logs) 0.555
Skewness (logs) -0.933
Standard Error of Skewness (logs) 0.398
Serial Correlation Coefficient (logs) -0.001
Coefficient of Variation (logs) 0.467
Non- Adjusted Non- Adjusted
exceedance Recurrence Estimated exceedance Estimated
Probability Interval Streamflow Probability Streamflow
----------- ----------- --------- ----------- ---------
0.0100 100.00 0.342 0.1115 0.000
0.0200 50.00 0.621 0.1205 0.000
0.0500 20.00 1.423 0.1474 0.000
0.1000 10.00 2.786 0.1923 0.000
0.2000 5.00 5.805 0.2821 2.967
0.5000 2.00 18.791 0.5513 15.625
0.8000 1.25 45.997 0.8205 42.885
0.9000 1.11 66.417 0.9103 63.686
0.9600 1.04 91.771 0.9641 88.998
0.9800 1.02 109.273 0.9821 106.740
0.9900 1.01 125.184 0.9910 123.254
Note -- Adjusted parameter values include zero values
and correspond with non-exceedance probabilities
in column 1 and recurrence interval in column 2.
Estimated values in column 3 are based on
non-zero values.