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. 04018750 - streamflow gaging station 1-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1965 - 1990 - time period 24 - non-zero values 0 - zero values 2 - years with missing values (not used) 75.000 36.000 34.000 143.000 50.000 41.000 44.000 25.000 30.000 36.000 33.000 28.000 40.000 45.000 60.000 15.000 30.000 55.000 120.000 8.000 5.000 140.000 6.100 42.000 The following 7 statistics are based on non-zero values: Mean (logs) 1.547 Variance (logs) 0.137 Standard Deviation (logs) 0.371 Skewness (logs) -0.674 Standard Error of Skewness (logs) 0.472 Serial Correlation Coefficient (logs) -0.214 Coefficient of Variation (logs) 0.240 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 3.212 0.0200 50.00 4.564 0.0500 20.00 7.498 0.1000 10.00 11.308 0.2000 5.00 17.922 0.5000 2.00 38.778 0.8000 1.25 73.286 0.9000 1.11 97.198 0.9600 1.04 126.756 0.9800 1.02 147.712 0.9900 1.01 167.515 =============================== 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. 04018750 - streamflow gaging station 7-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1965 - 1990 - time period 24 - non-zero values 0 - zero values 2 - years with missing values (not used) 93.571 66.571 34.000 172.143 98.857 52.429 129.714 72.143 108.000 86.571 116.286 28.143 66.143 77.857 110.857 77.857 65.714 134.286 154.286 67.857 108.571 140.000 49.286 59.714 The following 7 statistics are based on non-zero values: Mean (logs) 1.917 Variance (logs) 0.039 Standard Deviation (logs) 0.198 Skewness (logs) -0.568 Standard Error of Skewness (logs) 0.472 Serial Correlation Coefficient (logs) -0.167 Coefficient of Variation (logs) 0.103 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 23.722 0.0200 50.00 28.330 0.0500 20.00 36.475 0.1000 10.00 45.052 0.2000 5.00 57.228 0.5000 2.00 86.141 0.8000 1.25 121.992 0.9000 1.11 143.007 0.9600 1.04 166.656 0.9800 1.02 182.387 0.9900 1.01 196.700 =============================== 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. 04018750 - streamflow gaging station 30-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1965 - 1990 - time period 24 - non-zero values 0 - zero values 2 - years with missing values (not used) 108.000 73.800 35.633 194.500 107.167 61.033 149.933 89.500 114.233 111.467 118.433 30.833 105.000 87.167 115.567 92.667 70.333 169.833 194.833 93.067 125.833 152.167 53.333 78.200 The following 7 statistics are based on non-zero values: Mean (logs) 1.983 Variance (logs) 0.041 Standard Deviation (logs) 0.203 Skewness (logs) -0.780 Standard Error of Skewness (logs) 0.472 Serial Correlation Coefficient (logs) -0.165 Coefficient of Variation (logs) 0.102 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 25.042 0.0200 50.00 30.669 0.0500 20.00 40.758 0.1000 10.00 51.469 0.2000 5.00 66.670 0.5000 2.00 102.029 0.8000 1.25 143.335 0.9000 1.11 165.910 0.9600 1.04 189.712 0.9800 1.02 204.560 0.9900 1.01 217.363