CONSTANT    2.397515E+17
ZEROS     2
  0.000000E+00  0.000000E+00
  0.000000E+00  0.000000E+00
POLES     5
 -5.026548E+02  0.000000E+00
 -1.005310E+03  0.000000E+00
 -1.130973E+03  0.000000E+00
 -1.480318E-01  1.480318E-01
 -1.480318E-01 -1.480318E-01

##################################################
###   2.304000E+06     Norm. Factor A0 (in Hz)   #
###   800.0   V/m/s                              #
###   1.907   microV/Count                       #
###           CMG-40T/30 (s/n: T4706)            #
###           REF72A (s/n: 8102)                 #
###           Poles/Zeroes in rad/sec            #
##################################################
### Network Code: HA
### Station Code: EREA
### Description : Eretria
### Stream Code : HH
### Latitude    : 38.4199
### Longitude   : 23.9318
### Elevation   : 475
###
### Comments    : no digit/sensor changes
###
### Start Date  : 16-06-2010
### End Date    : 19-11-2014
 
###  PERIOD #2  ]=-----------------------------###
 
CONSTANT    2.877320E+17
ZEROS     2
  0.000000E+00  0.000000E+00
  0.000000E+00  0.000000E+00
POLES     5
 -5.026548E+02  0.000000E+00
 -1.005310E+03  0.000000E+00
 -1.130973E+03  0.000000E+00
 -1.480318E-01  1.480318E-01
 -1.480318E-01 -1.480318E-01

##################################################
###   2.304000E+06     Norm. Factor A0 (in Hz)   #
###   800.0   V/m/s                              #
###   1.589   microV/Count                       #
###           CMG-40T/30 (s/n: T4706)            #
###           REF130 (s/n: 9633)                 #
###           Poles/Zeroes in rad/sec            #
##################################################
### Network Code: HA
### Station Code: EREA
### Description : Eretria
### Stream Code : HH
### Latitude    : 38.4199
### Longitude   : 23.9318
### Elevation   : 475
###
### Comments    : instrum. change
###
### Start Date  : 19-11-2014
### End Date    : currently used (25-11-2015)