Model results for filter 28AL0019_1
Output date&time dd-mm-yyyy H:M:S : 29-09-2018 22:03:07

X:  224668.43
Y:  488474.79
Surface level (m above datum):      10.32
Screen top (m above datum):       8.57
Screen bottom (m above datum):       7.57
Maximum head measurement frequency:   1.00
Mean of observed groundwater head:   9.16
Median of observed groundwater head:       9.15
Modeling time step (days):   1.00

Goodness of fit
Explained variance deterministic (%):      94.20
Explained variance stochastic (%):      96.23
Sum squared residuals (m2):       3.73
Ndata:    303
RMSE=root mean square error of residuals (m): 0.11
Nparameters:        5
Relative Akaike Information Criterium:     408.48
Sum squared innovations (m2):       2.42

Explaining time series
EVAP: 260_De_Bilt_EVAP_19010101_20131015
IR type: incomplete Gamma function, parameters shared with PREC
Average stress intensity (in stress unit): 0.0015
Average partial response (m): -0.0224
PREC: 672_PREC_Hellendoorn_19510101_20160731
IR type: incomplete Gamma function
Average stress intensity (in stress unit): 0.0022
Average partial response (m): 0.0652

Noise model
Noise model type:exp decay

Drainage base
Evaluatiom methode: as difference between measured head and modelled fluctuations
Drainage base level (in m above datum):       7.87

Optimized parameters
A_PIII_PREC: 1.535e+03 stdev:3.617e+01   95% conf.int.: [1.477e+03,1.593e+03]
a_PIII_PREC: 1.933e-03 stdev:5.431e-05   95% conf.int.: [1.842e-03,2.023e-03]
alfa_EXP_NOISE: 5.785e-02 stdev:7.674e-03   95% conf.int.: [4.650e-02,7.207e-02]

Correlation matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,alfa_EXP_NOISE
   A_PIII_PREC,          1.00,         -0.87,          0.02
   a_PIII_PREC,              ,          1.00,         -0.02
alfa_EXP_NOISE,              ,              ,          1.00

Covariance matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,alfa_EXP_NOISE
   A_PIII_PREC,        0.0006,       -0.0006,        0.0001
   a_PIII_PREC,              ,        0.0008,       -0.0001
alfa_EXP_NOISE,              ,              ,        0.0176

Derived parameters from harmonic component
n_PIII_PREC: 9.735e-01 stdev:2.010e-03 95% conf.int.: [9.696e-01,9.780e-01]
f_factor_EVAP: 9.703e-01 stdev:7.982e-03 95% conf.int.: [9.536e-01,9.889e-01]

Groundwater recharge
Mean recharge rate (m/year): 0.296 stdev:0.004 95% conf.int.: [0.286,0.306]
Mean interception+transpiration rate (m/year): 0.528 stdev:0.004 95% conf.int.: [0.518,0.538]
Evaluation period: 1-1-1984 to 29-12-1995

