Model results for filter 28CP0197_2
Output date&time dd-mm-yyyy H:M:S : 02-10-2018 11:30:18

X:  227398.02
Y:  485957.95
Surface level (m above datum):      15.26
Screen top (m above datum):     -14.80
Screen bottom (m above datum):     -15.80
Maximum head measurement frequency:   1.00
Mean of observed groundwater head:   8.41
Median of observed groundwater head:       8.52
Modeling time step (days):   1.00

Goodness of fit
Explained variance deterministic (%):      96.61
Explained variance stochastic (%):      99.70
Sum squared residuals (m2):       2.70
Ndata:    354
RMSE=root mean square error of residuals (m): 0.09
Nparameters:        8
Relative Akaike Information Criterium:     367.84
Sum squared innovations (m2):       0.24

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): 0.0070
PREC: 672_PREC_Hellendoorn_19510101_20160731
IR type: incomplete Gamma function
Average stress intensity (in stress unit): 0.0022
Average partial response (m): 0.1369
WELL: total_extracted_volumes_Nijverdal
IR type: incomplete Gamma function
                               Well name,    Xcoord,    Ycoord,  Top screen,Bottom screen,    distance
       total_extracted_volumes_Nijverdal, 226683.50, 486366.85,        0.00,        0.00,      823.25
Average stress intensity (stress quantity per time step): 14049.8709
Average partial response (m): -0.0288

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):       7.62

Optimized parameters
A_PIII_PREC: 2.088e+03 stdev:2.292e+01   95% conf.int.: [2.050e+03,2.127e+03]
a_PIII_PREC: 2.437e-03 stdev:2.260e-05   95% conf.int.: [2.399e-03,2.473e-03]
A_PIII_WELL: 1.338e-04 stdev:2.429e-06   95% conf.int.: [1.296e-04,1.380e-04]
a_PIII_WELL: 1.376e-03 stdev:1.072e-04   95% conf.int.: [1.210e-03,1.573e-03]
n_PIII_WELL: 1.064e+00 stdev:5.361e-02   95% conf.int.: [9.813e-01,1.154e+00]
alfa_EXP_NOISE: 7.280e-03 stdev:1.286e-03   95% conf.int.: [5.273e-03,9.559e-03]

Correlation matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,   A_PIII_WELL,   a_PIII_WELL,   n_PIII_WELL,alfa_EXP_NOISE
   A_PIII_PREC,          1.00,         -0.95,         -0.16,          0.08,         -0.10,          0.06
   a_PIII_PREC,              ,          1.00,          0.15,         -0.09,          0.09,         -0.09
   A_PIII_WELL,              ,              ,          1.00,         -0.90,         -0.82,         -0.20
   a_PIII_WELL,              ,              ,              ,          1.00,          0.95,          0.21
   n_PIII_WELL,              ,              ,              ,              ,          1.00,          0.21
alfa_EXP_NOISE,              ,              ,              ,              ,              ,          1.00

Covariance matrix:
              ,   A_PIII_PREC,   a_PIII_PREC,   A_PIII_WELL,   a_PIII_WELL,   n_PIII_WELL,alfa_EXP_NOISE
   A_PIII_PREC,        0.0001,       -0.0001,       -0.0000,        0.0001,       -0.0001,        0.0001
   a_PIII_PREC,              ,        0.0001,        0.0000,       -0.0001,        0.0000,       -0.0001
   A_PIII_WELL,              ,              ,        0.0003,       -0.0013,       -0.0008,       -0.0006
   a_PIII_WELL,              ,              ,              ,        0.0061,        0.0037,        0.0029
   n_PIII_WELL,              ,              ,              ,              ,        0.0025,        0.0019
alfa_EXP_NOISE,              ,              ,              ,              ,              ,        0.0312

Derived parameters from harmonic component
n_PIII_PREC: 1.547e+00 stdev:4.410e-03 95% conf.int.: [1.538e+00,1.556e+00]
f_factor_EVAP: 6.682e-01 stdev:6.405e-03 95% conf.int.: [6.567e-01,6.823e-01]

Groundwater recharge
Mean recharge rate (m/year): 0.448 stdev:0.004 95% conf.int.: [0.440,0.454]
Mean interception+transpiration rate (m/year): 0.366 stdev:0.004 95% conf.int.: [0.360,0.374]
Evaluation period: 1-1-1982 to 29-12-1995

