project, see www.ki-sigs.de, which is funded by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) and involves several universities, research institutions and private companies in northern Germany. Researchers YP, SB and LP are employed through funding from the KI-SIGS project. Neither the funding agency nor the involved private companies have had any influence on the planning and design of this survey, the writing of the manuscript, or the publication process. This research was conducted while EP was at Universität zu Lübeck.

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