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How to contribute to the toolbox: https://confluence.ecmwf.int/display/COPSRV/How+to+contribute+to+the+toolbox
Harmonised table template: Harmonized_tables C3S_SIS_EXAMPLE.xlsx
Presentation of how to deliver Data and Documentation to the CDS (note that this is for reference and written for ECV contractors): RDragani_C3S_X-CDR_20181108.pptx