Initial commit of metadata for stations of networks GE, GR and RN

.gitattributes

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+* text=auto !eol
+/*.dlsv -text svneol=unset#application/octet-stream

.gitignore

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+/*.resp
+.vscode/
+NRL

LICENSE.md

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+# Creative Commons Attribution 4.0 International License (CC-BY 4.0)
+
+[![Creative Commons License](https://i.creativecommons.org/l/by/4.0/88x31.png)](https://creativecommons.org/licenses/by/4.0/)
+
+The files of this repository are licensed under a [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/). Please see the folders README.md files on how-to cite the use of the data sets of the different networks.

README.md

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 * AM only stations maintained by the SeisObs
 * GE only station IBBN
 * GR only station BUG
-* NH stations of the GD-NRW. These are actually not maintained by the SeisObs, but are added for convenience because the info is not provided by the GD-NRW as dataless seed volume.
 * RN the main permanent network of the SeisObs
 * YD temporary network of the FloodRisk project (2020-2024)
-* ZD stations of the SeisObs within the AlpArray project
+* Z3 stations of the SeisObs within the AlpArray project
 
 See the README.md file in the individual folders for more details, especially on the license and citation of data sets.

RN/README.md

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+# RN: RuhrNet - Seismic Network of the Ruhr-University Bochum
+
+## Description
+
+The RuhrNet is local network to monitor natural and mining induced seismicity in the Ruhr mining district (Germany). It is operated by the Seismological Observatory of the Ruhr-University Bochum.
+
+## Time span
+
+- Start year: 2007
+- End year:
+- Embargo: none
+
+## DOI
+
+[10.7914/SN/RN](https://doi.org/10.7914/SN/RN)
+
+## Citation
+
+Ruhr University Bochum (Germany). (2007). RuhrNet - Seismic Network of the Ruhr-University Bochum [Data set]. Federal Institute for Geosciences and Natural Resources (BGR, Germany). <https://doi.org/10.7914/SN/RN>
+
+## License
+
+[![Creative Commons License](https://i.creativecommons.org/l/by/4.0/88x31.png)](http://creativecommons.org/licenses/by/4.0/)
+
+This networks data set is licensed under a [Creative Commons Attribution 4.0 International License](http://creativecommons.org/licenses/by/4.0/).
+
+## Stations
+
+### open
+
+- BAVN
+- BAVS
+- BKLB
+- BPFI
+- BTEZ
+- BULI
+- HMES
+- IBBE
+- IBBS
+- ZER1
+- ZER3
+- ZERL
+
+### closed
+
+- BAHL
+- BHOF
+- BRHE
+- BRH2
+- BRH3 (2020.124)
+- BSHA
+- ZER2
+- ZER4