4. StationXML Tools¶
As StationXML files are ordinary ascii files, they may be editted with any text editor (e.g., vi/VIM, TextWrangler, Notepad/Wordpad, etc)
However, StationXML files can become very large and unwieldly as more stations and channels are added. For instance a regional seismic network can generate a StationXML file of size > 30Mb on disk (>400,000 lines).
Fortunately, several tools exist that allow creation and editting of StationXML files.
4.1. obspy + NRL¶
ObsPy contains a number of very useful modules for working with StationXML. In particular, ObsPy contain a module able to connect to the IRIS Nominal Resource Library (NRL) and download full responses (sensor + datalogger) for various combinations of sensor + datalogger contained within the NRL.
The excerpts below provide examples of how to work with ObsPy and the NRL.
from obspy.clients.nrl import NRL from lib.valid import stationxml_validator def main(): nrl = NRL('http://ds.iris.edu/NRL/') datalogger_keys = ['REF TEK', 'RT 130 & 130-SMA', '1', '40'] sensor_keys = ['Streckeisen', 'STS-2', '1500', '3 - installed 04/97 to present'] response = nrl.get_response(sensor_keys=sensor_keys, datalogger_keys=datalogger_keys) response.plot(min_freq=.001) for stage in response.response_stages: print(stage)
The resulting response plot looks like
Output for the response stages Show/Hide Stages
<?xml version='1.0' encoding='UTF-8'?>
Response type: PolesZerosResponseStage, Stage Sequence Number: 1
From M/S (Velocity in Meters per Second) to V (Volts)
Stage gain: 1500.0, defined at 1.00 Hz
Transfer function type: LAPLACE (RADIANS/SECOND)
Normalization factor: 3.4684e+17, Normalization frequency: 1.00 Hz
Poles: (-0.037-0.037j), (-0.037+0.037j), (-15.64+0j), (-97.34-400.7j), (-97.34+400.7j), (-374.8+0j), (-520.3+0j), (-10530-10050j), (-10530+10050j), (-13300+0j), (-255.097+0j)
Zeros: 0j, 0j, (-15.15+0j), (-176.6+0j), (-463.1-430.5j), (-463.1+430.5j)
Response type: ResponseStage, Stage Sequence Number: 2
From V to V
Stage gain: 1.0, defined at 0.05 Hz
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 3
From V (Volts) to COUNTS (Digital Counts)
Stage gain: 629129.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 102400.00 Hz
Decimation Factor: 1
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 1 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 4
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 102400.00 Hz
Decimation Factor: 8
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 29 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 5
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 12800.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 13 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 6
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 6400.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 13 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 7
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 3200.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 13 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 8
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 1600.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.00
Decimation Correction: 0.00
Transfer function type: DIGITAL
Contains 13 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 9
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 800.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.01
Decimation Correction: 0.01
Transfer function type: DIGITAL
Contains 13 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 10
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 400.00 Hz
Decimation Factor: 2
Decimation Offset: 0
Decimation Delay: 0.12
Decimation Correction: 0.12
Transfer function type: DIGITAL
Contains 101 numerators and 0 denominators
Response type: CoefficientsTypeResponseStage, Stage Sequence Number: 11
From COUNTS (Digital Counts) to COUNTS (Digital Counts)
Stage gain: 1.0, defined at 0.05 Hz
Decimation:
Input Sample Rate: 200.00 Hz
Decimation Factor: 5
Decimation Offset: 0
Decimation Delay: 0.58
Decimation Correction: 0.58
Transfer function type: DIGITAL
Contains 235 numerators and 0 denominators
Up until now we’ve been examining the response in ObsPy format, that is, as an instance of type obspy.core.inventory.response.Response.
We can also examine this as part of a StationXML file, however, StationXML does not allow children to exist without parents. Thus, a response must be contained within a <Channel> element, which itself must be contained within a <Station> element, which must be contained within a <Network> element, etc.
The excerpt below creates a generic structure to contain our Response object, exports this to StationXML, and validates it against the StationXML schema.
from obspy.clients.nrl import NRL ... inventory = Inventory(networks=[], source="demo") network = Network(code='US') station = Station(code='ANMO', latitude=34.945911, longitude=-106.457199, elevation=1820.0, creation_date=UTCDateTime(1970, 1, 1), # required site=Site(name='Albuquerque, New Mexico, USA') # required ) channel = Channel(code='BHZ', location_code='10', # required latitude=34.945911, # required longitude=-106.457199, # required elevation=1820.0, # required depth=0., # required ) channel.response = response inventory.write("Test.xml", format="stationxml", validate=False)
The output StationXML file looks like:
<?xml version='1.0' encoding='UTF-8'?>
Response type: PolesZerosResponseStage, Stage Sequence Number: 1
<?xml version='1.0' encoding='UTF-8'?>
<FDSNStationXML xmlns="http://www.fdsn.org/xml/station/1" schemaVersion="1.0">
<Source>demo</Source>
<Module>ObsPy 1.1.0</Module>
<ModuleURI>https://www.obspy.org</ModuleURI>
<Created>2020-02-07T22:26:54.123236</Created>
<Network code="US">
<Station code="ANMO">
<Latitude unit="DEGREES">34.945911</Latitude>
<Longitude unit="DEGREES">-106.457199</Longitude>
<Elevation unit="METERS">1820.0</Elevation>
<Site>
<Name>Albuquerque, New Mexico, USA</Name>
</Site>
<CreationDate>1970-01-01T00:00:00</CreationDate>
<Channel code="BHZ" locationCode="10">
<Latitude unit="DEGREES">34.945911</Latitude>
<Longitude unit="DEGREES">-106.457199</Longitude>
<Elevation unit="METERS">1820.0</Elevation>
<Depth unit="METERS">0.0</Depth>
<Response>
<InstrumentSensitivity>
<Value>941864732.6931986</Value>
<Frequency>1.0</Frequency>
<InputUnits>
<Name>M/S</Name>
<Description>Velocity in Meters per Second</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
</InstrumentSensitivity>
<Stage number="1">
<PolesZeros>
<InputUnits>
<Name>M/S</Name>
<Description>Velocity in Meters per Second</Description>
</InputUnits>
<OutputUnits>
<Name>V</Name>
<Description>Volts</Description>
</OutputUnits>
<PzTransferFunctionType>LAPLACE (RADIANS/SECOND)</PzTransferFunctionType>
<NormalizationFactor>3.4684e+17</NormalizationFactor>
<NormalizationFrequency unit="HERTZ">1.0</NormalizationFrequency>
<Zero number="0">
<Real minusError="0.0" plusError="0.0">0.0</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Zero>
<Zero number="1">
<Real minusError="0.0" plusError="0.0">0.0</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Zero>
<Zero number="2">
<Real minusError="-15.15" plusError="-15.15">-15.15</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Zero>
<Zero number="3">
<Real minusError="-176.6" plusError="-176.6">-176.6</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Zero>
<Zero number="4">
<Real minusError="-463.1" plusError="-463.1">-463.1</Real>
<Imaginary minusError="-430.5" plusError="-430.5">-430.5</Imaginary>
</Zero>
<Zero number="5">
<Real minusError="-463.1" plusError="-463.1">-463.1</Real>
<Imaginary minusError="430.5" plusError="430.5">430.5</Imaginary>
</Zero>
<Pole number="0">
<Real minusError="-0.037" plusError="-0.037">-0.037</Real>
<Imaginary minusError="-0.037" plusError="-0.037">-0.037</Imaginary>
</Pole>
<Pole number="1">
<Real minusError="-0.037" plusError="-0.037">-0.037</Real>
<Imaginary minusError="0.037" plusError="0.037">0.037</Imaginary>
</Pole>
<Pole number="2">
<Real minusError="-15.64" plusError="-15.64">-15.64</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Pole>
<Pole number="3">
<Real minusError="-97.34" plusError="-97.34">-97.34</Real>
<Imaginary minusError="-400.7" plusError="-400.7">-400.7</Imaginary>
</Pole>
<Pole number="4">
<Real minusError="-97.34" plusError="-97.34">-97.34</Real>
<Imaginary minusError="400.7" plusError="400.7">400.7</Imaginary>
</Pole>
<Pole number="5">
<Real minusError="-374.8" plusError="-374.8">-374.8</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Pole>
<Pole number="6">
<Real minusError="-520.3" plusError="-520.3">-520.3</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Pole>
<Pole number="7">
<Real minusError="-10530.0" plusError="-10530.0">-10530.0</Real>
<Imaginary minusError="-10050.0" plusError="-10050.0">-10050.0</Imaginary>
</Pole>
<Pole number="8">
<Real minusError="-10530.0" plusError="-10530.0">-10530.0</Real>
<Imaginary minusError="10050.0" plusError="10050.0">10050.0</Imaginary>
</Pole>
<Pole number="9">
<Real minusError="-13300.0" plusError="-13300.0">-13300.0</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Pole>
<Pole number="10">
<Real minusError="-255.097" plusError="-255.097">-255.097</Real>
<Imaginary minusError="0.0" plusError="0.0">0.0</Imaginary>
</Pole>
</PolesZeros>
<StageGain>
<Value>1500.0</Value>
<Frequency>1.0</Frequency>
</StageGain>
</Stage>
<Stage number="2">
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="3">
<Coefficients>
<InputUnits>
<Name>V</Name>
<Description>Volts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>1.0</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">102400.0</InputSampleRate>
<Factor>1</Factor>
<Offset>0</Offset>
<Delay>0.0</Delay>
<Correction>0.0</Correction>
</Decimation>
<StageGain>
<Value>629129.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="4">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.000976562</Numerator>
<Numerator>0.00244141</Numerator>
<Numerator>0.00488281</Numerator>
<Numerator>0.00854492</Numerator>
<Numerator>0.0136719</Numerator>
<Numerator>0.0205078</Numerator>
<Numerator>0.0292969</Numerator>
<Numerator>0.0393066</Numerator>
<Numerator>0.0498047</Numerator>
<Numerator>0.0600586</Numerator>
<Numerator>0.0693359</Numerator>
<Numerator>0.0769043</Numerator>
<Numerator>0.0820312</Numerator>
<Numerator>0.0839844</Numerator>
<Numerator>0.0820312</Numerator>
<Numerator>0.0769043</Numerator>
<Numerator>0.0693359</Numerator>
<Numerator>0.0600586</Numerator>
<Numerator>0.0498047</Numerator>
<Numerator>0.0393066</Numerator>
<Numerator>0.0292969</Numerator>
<Numerator>0.0205078</Numerator>
<Numerator>0.0136719</Numerator>
<Numerator>0.00854492</Numerator>
<Numerator>0.00488281</Numerator>
<Numerator>0.00244141</Numerator>
<Numerator>0.000976562</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">102400.0</InputSampleRate>
<Factor>8</Factor>
<Offset>0</Offset>
<Delay>0.00013672</Delay>
<Correction>0.00013672</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="5">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.225586</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">12800.0</InputSampleRate>
<Factor>2</Factor>
<Offset>0</Offset>
<Delay>0.00046875</Delay>
<Correction>0.00046875</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="6">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.225586</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">6400.0</InputSampleRate>
<Factor>2</Factor>
<Offset>0</Offset>
<Delay>0.0009375</Delay>
<Correction>0.0009375</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="7">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.225586</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">3200.0</InputSampleRate>
<Factor>2</Factor>
<Offset>0</Offset>
<Delay>0.001875</Delay>
<Correction>0.001875</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="8">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.225586</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">1600.0</InputSampleRate>
<Factor>2</Factor>
<Offset>0</Offset>
<Delay>0.00375</Delay>
<Correction>0.00375</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="9">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>0.000244141</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.225586</Numerator>
<Numerator>0.193359</Numerator>
<Numerator>0.12085</Numerator>
<Numerator>0.0537109</Numerator>
<Numerator>0.0161133</Numerator>
<Numerator>0.00292969</Numerator>
<Numerator>0.000244141</Numerator>
</Coefficients>
<Decimation>
<InputSampleRate unit="HERTZ">800.0</InputSampleRate>
<Factor>2</Factor>
<Offset>0</Offset>
<Delay>0.0075</Delay>
<Correction>0.0075</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
<Stage number="10">
<Coefficients>
<InputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</InputUnits>
<OutputUnits>
<Name>COUNTS</Name>
<Description>Digital Counts</Description>
</OutputUnits>
<CfTransferFunctionType>DIGITAL</CfTransferFunctionType>
<Numerator>-7.15032e-07</Numerator>
<Numerator>-5.60109e-06</Numerator>
<Numerator>-2.62179e-06</Numerator>
<Numerator>-4.31403e-05</Numerator>
<Numerator>-4.64771e-06</Numerator>
<Numerator>1.43006e-06</Numerator>
<Numerator>2.34769e-05</Numerator>
<Numerator>1.43006e-06</Numerator>
<Numerator>-5.27932e-05</Numerator>
<Numerator>-0.000366692</Numerator>
<Numerator>0.000376107</Numerator>
<Numerator>0.000854226</Numerator>
<Numerator>3.05081e-05</Numerator>
<Numerator>-0.00127621</Numerator>
<Numerator>-0.000910951</Numerator>
<Numerator>0.00127669</Numerator>
<Numerator>0.00215165</Numerator>
<Numerator>-0.000461554</Numerator>
<Numerator>-0.00333765</Numerator>
<Numerator>-0.00140933</Numerator>
<Numerator>0.00377072</Numerator>
<Numerator>0.00419414</Numerator>
<Numerator>-0.00264288</Numerator>
<Numerator>-0.00720121</Numerator>
<Numerator>-0.000644006</Numerator>
<Numerator>0.009184</Numerator>
<Numerator>0.00608445</Numerator>
<Numerator>-0.00857824</Numerator>
<Numerator>-0.0127401</Numerator>
<Numerator>0.00398225</Numerator>
<Numerator>0.0186261</Numerator>
<Numerator>0.0052052</Numerator>
<Numerator>-0.0209407</Numerator>
<Numerator>-0.0181629</Numerator>
<Numerator>0.0166669</Numerator>
<Numerator>0.0322447</Numerator>
<Numerator>-0.00346588</Numerator>
<Numerator>-0.0429528</Numerator>
<Numerator>-0.0193265</Numerator>
<Numerator>0.044309</Numerator>
<Numerator>0.0497909</Numerator>
<Numerator>-0.0294164</Numerator>
<Numerator>-0.0826078</Numerator>
<Numerator>-0.00934166</Numerator>
<Numerator>0.107552</Numerator>
<Numerator>0.0816604</Numerator>
<Numerator>-0.10311</Numerator>
<Numerator>-0.204208</Numerator>
<Numerator>-3.12231e-05</Numerator>
<Numerator>0.390432</Numerator>
<Numerator>0.589958</Numerator>
<Numerator>0.390432</Numerator>
<Numerator>-3.12231e-05</Numerator>
<Numerator>-0.204208</Numerator>
<Numerator>-0.10311</Numerator>
<Numerator>0.0816604</Numerator>
<Numerator>0.107552</Numerator>
<Numerator>-0.00934166</Numerator>
<Numerator>-0.0826078</Numerator>
<Numerator>-0.0294164</Numerator>
<Numerator>0.0497909</Numerator>
<Numerator>0.044309</Numerator>
<Numerator>-0.0193265</Numerator>
<Numerator>-0.0429528</Numerator>
<Numerator>-0.00346588</Numerator>
<Numerator>0.0322447</Numerator>
<Numerator>0.0166669</Numerator>
<Numerator>-0.0181629</Numerator>
<Numerator>-0.0209407</Numerator>
<Numerator>0.0052052</Numerator>
<Numerator>0.0186261</Numerator>
<Numerator>0.00398225</Numerator>
<Numerator>-0.0127401</Numerator>
<Numerator>-0.00857824</Numerator>
<Numerator>0.00608445</Numerator>
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<StageGain>
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</Stage>
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<Name>COUNTS</Name>
<Description>Digital Counts</Description>
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<Decimation>
<InputSampleRate unit="HERTZ">200.0</InputSampleRate>
<Factor>5</Factor>
<Offset>0</Offset>
<Delay>0.585</Delay>
<Correction>0.585</Correction>
</Decimation>
<StageGain>
<Value>1.0</Value>
<Frequency>0.05</Frequency>
</StageGain>
</Stage>
</Response>
</Channel>
</Station>
</Network>
</FDSNStationXML>
4.2. IRIS SEED-stationXML Converter¶
IRIS maintains a java tool that can convert between dataless SEED and StationXML formats at: