CONSTANT    2.660990E+08
ZEROS     2
  0.000000E+00  0.000000E+00
  0.000000E+00  0.000000E+00
POLES     2
 -2.230000E-01  2.230000E-01
 -2.230000E-01 -2.230000E-01

##################################################
###   1.000000E+00     Norm. Factor A0 (in Hz)   #
###  1000.0   V/m/s                              #
###   3.758   microV/Count                       #
###           LE-3D/20                           #
###           DR24-SC                            #
###           Poles/Zeroes in rad/sec            #
##################################################
### Network Code: HL
### Station Code: APE
### Description : Aperanthos (Naxos)
### Stream Code : HH
### Latitude    : 37.0727
### Longitude   : 25.5230
### Elevation   : 608
###
### Start Date  : 23-10-1998
### End Date    : 29-04-2008
 
###  PERIOD #2  ]=-----------------------------###
 
CONSTANT    3.552001E+16
ZEROS     2
  0.000000E+00  0.000000E+00
  0.000000E+00  0.000000E+00
POLES     5
 -3.701000E-02  3.701000E-02
 -3.701000E-02 -3.701000E-02
 -2.513000E+02  0.000000E+00
 -1.310000E+02  4.673000E+02
 -1.310000E+02 -4.673000E+02

##################################################
###   2.386614E+05     Norm. Factor A0 (in Hz)   #
###  1500.0   V/m/s                              #
###   2.500   microV/Count                       #
###           STS-2                              #
###           PS6-SC                             #
###           Poles/Zeroes in rad/sec            #
##################################################
### Network Code: HL
### Station Code: APE
### Description : Aperanthos (Naxos)
### Stream Code : HH
### Latitude    : 37.0727
### Longitude   : 25.5230
### Elevation   : 608
###
### Comments    : instrum. changes
###
### Start Date  : 29-04-2008
### End Date    : currently used (25-11-2015)