online runoff curve number calibration Formulas S = 5 [P + 2Q - (4Q2 + 5PQ)1/2] CN = 1000 / (S + 10) Reference Ponce, V. M. and R. H. Hawkins. 1996. Runoff curve number: Has it reached maturity? Journal of Hydrologic Engineering, Vol. 1, No. 1, 11-19, January. Example INPUT DATA: Enter array size n:      Enter paired values of arrays P and Q (separate each value with a comma; maximum string length is 300 characters). P:      /var/www/html/ponce/onlinecncalibration.php on line 136 "> Q:      /var/www/html/ponce/onlinecncalibration.php on line 138 "> ECHO OF INPUT: Warning: Undefined variable $number in /var/www/html/ponce/onlinecncalibration.php on line 148 n =   Warning: Undefined variable $number in /var/www/html/ponce/onlinecncalibration.php on line 150 Warning: Undefined variable $j in /var/www/html/ponce/onlinecncalibration.php on line 156 Warning: Undefined variable $pvar in /var/www/html/ponce/onlinecncalibration.php on line 157 Warning: Trying to access array offset on null in /var/www/html/ponce/onlinecncalibration.php on line 157 P(1) =      Warning: Undefined variable $number in /var/www/html/ponce/onlinecncalibration.php on line 160 Warning: Undefined variable $j in /var/www/html/ponce/onlinecncalibration.php on line 166 Warning: Undefined variable $qvar in /var/www/html/ponce/onlinecncalibration.php on line 167 Warning: Trying to access array offset on null in /var/www/html/ponce/onlinecncalibration.php on line 167 Q(1) =      OUTPUT: Curve number = Warning: Undefined variable $cave in /var/www/html/ponce/onlinecncalibration.php on line 174 Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in /var/www/html/ponce/onlinecncalibration.php on line 174 0   Your request was processed at  10:47:18 pm on April 3rd, 2025   [ 250403  22:47:18 ]. Thank you for running onlinerncalibration.   Please call again.   [180824]