Model results for filter 28AP0093_1
Output date&time dd-mm-yyyy H:M:S : 29-09-2018 21:38:19

X:  224550.34
Y:  488100.53
Surface level (m above datum):      11.60
Screen top (m above datum):       2.60
Screen bottom (m above datum):       1.60
Maximum head measurement frequency:   1.00
Mean of observed groundwater head:   9.24
Median of observed groundwater head:       9.24
Modeling time step (days):   1.00

Goodness of fit
Explained variance deterministic (%):      94.47
Explained variance stochastic (%):      97.78
Sum squared residuals (m2):       4.05
Ndata:    352
RMSE=root mean square error of residuals (m): 0.11
Nparameters:        5
Relative Akaike Information Criterium:     502.06
Sum squared innovations (m2):       1.62

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): 0.0014
PREC: 672_PREC_Hellendoorn_19510101_20160731
IR type: incomplete Gamma function
Average stress intensity (in stress unit): 0.0022
Average partial response (m): 0.1194

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):       8.05

Optimized parameters
A_PIII_PREC: 1.554e+03 stdev:2.493e+01   95% conf.int.: [1.513e+03,1.595e+03]
a_PIII_PREC: 2.371e-03 stdev:4.343e-05   95% conf.int.: [2.304e-03,2.441e-03]
alfa_EXP_NOISE: 4.316e-02 stdev:4.441e-03   95% conf.int.: [3.652e-02,5.142e-02]

Correlation matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,alfa_EXP_NOISE
   A_PIII_PREC,          1.00,         -0.87,         -0.08
   a_PIII_PREC,              ,          1.00,          0.06
alfa_EXP_NOISE,              ,              ,          1.00

Covariance matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,alfa_EXP_NOISE
   A_PIII_PREC,        0.0003,       -0.0003,       -0.0001
   a_PIII_PREC,              ,        0.0003,        0.0001
alfa_EXP_NOISE,              ,              ,        0.0106

Derived parameters from harmonic component
n_PIII_PREC: 1.116e+00 stdev:1.735e-03 95% conf.int.: [1.112e+00,1.119e+00]
f_factor_EVAP: 1.030e+00 stdev:6.125e-03 95% conf.int.: [1.018e+00,1.043e+00]

Groundwater recharge
Mean recharge rate (m/year): 0.250 stdev:0.003 95% conf.int.: [0.243,0.256]
Mean interception+transpiration rate (m/year): 0.564 stdev:0.003 95% conf.int.: [0.558,0.571]
Evaluation period: 1-1-1982 to 29-12-1995

