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["KUNDELISTE"]
["Kunden-ID","Firma / Name","Ansprechpartner","Telefon","E-Mail","Straße","PLZ","Ort","Land","Kundentyp","Status","Kundensegment","Letzter Kontakt","Tage seit letztem Kontakt","Nächster Kontakt","Kontakt fällig","Umsatz YTD","Gesamtumsatz","Quelle","Notizen",null,"Übersicht",{"$nulls":4},"B2B","Aktiv","Neukunde","Webseite"]
[{"$f":"_xlfn.CONCAT(\"K\",TEXT(ROW()-1,\"0000\"))","v":"K0002"},"Müller GmbH","Anna Müller","+49 30 123456","anna.mueller@mueller.de","Hauptstraße 12","10115","Berlin","Deutschland","B2B","Aktiv","Stammkunde","2025-11-20",{"$f":"IF(M3=\"\",\"\",TODAY()-M3)","v":19},"2026-01-15",{"$f":"IF(AND(O3<>\"\",O3<TODAY()),\"Fällig\",\"\")","v":""},25000,120000,"Webseite","Langjähriger B2B-Kunde",null,"Anzahl Kunden",{"$f":"COUNTA(B3:B212)","v":10},{"$nulls":3},"B2C","Inaktiv","Stammkunde","Empfehlung"]
[{"$f":"_xlfn.CONCAT(\"K\",TEXT(ROW()-1,\"0000\"))","v":"K0003"},"Schneider OHG","Karl Schneider","+49 40 654321","k.schneider@schneider.de","Marktweg 5","20095","Hamburg","Deutschland","B2B","Lead","Neukunde","2025-12-01",8,"2025-12-20","",5000,5000,"Messe","Interessiert an Jahresvertrag",null,"Aktive Kunden",{"$f":"COUNTIF(K3:K212,\"Aktiv\")","v":5},{"$nulls":3},"VIP","Lead","Premium","Messe"]
["K0004","Bäckerei Huber","Lisa Huber","+49 89 987654","lisa.huber@baeckerei-huber.de","Bergstraße 8","80331","München","Deutschland","B2C","Aktiv","Stammkunde","2025-11-30",9,"2026-01-10","",3000,18000,"Empfehlung","Bestellt regelmäßig monatlich",null,"Leads",{"$f":"COUNTIF(K3:K212,\"Lead\")","v":3},{"$nulls":3},"Standard","Verloren","Gelegenheitskunde","Telefon"]
["K0005","Autohaus König","Martin König","+49 221 445566","m.koenig@autohaus-koenig.de","Ringstraße 22","50667","Köln","Deutschland","VIP","Aktiv","Premium","2025-11-10",29,"2025-12-18","",45000,300000,"Telefon","VIP-Kunde, hoher Umsatz",{"$nulls":9},"Sonstiges"]
["K0006","Blumenladen Rose","Julia Rose","+49 351 778899","j.rose@blumen-rose.de","Gartenweg 3","01067","Dresden","Deutschland","B2C","Inaktiv","Gelegenheitskunde","2025-07-05",157,null,"",0,3500,"Webseite","Hat seit Monaten nicht bestellt"]
["K0007","IT Solutions AG","Thomas Weber","+49 69 112233","t.weber@itsolutions.de","Industriestraße 15","60311","Frankfurt am Main","Deutschland","B2B","Lead","Neukunde","2025-12-03",6,"2025-12-22","",8000,8000,"Messe","Benötigt Angebot für 2026"]
["K0008","Modehaus Stern","Clara Stern","+49 711 998877","c.stern@modehaus-stern.de","Altstadt 9","70173","Stuttgart","Deutschland","B2C","Aktiv","Stammkunde","2025-11-25",14,"2026-01-05","",4200,24000,"Empfehlung","Stabile Bestellmengen"]
["K0009","Kaffeehaus Braun","Peter Braun","+49 228 334455","p.braun@kaffee-braun.de","Rheinweg 4","53111","Bonn","Deutschland","B2C","Verloren","Gelegenheitskunde","2024-05-10",578,null,"",0,2200,"Webseite","Zu Konkurrenz gewechselt"]
["K0010","Logistik Nord","Sabine Krüger","+49 421 667788","s.krueger@logistik-nord.de","Hafenstraße 20","28195","Bremen","Deutschland","B2B","Aktiv","Premium","2025-11-28",11,"2025-12-30","",38000,95000,"Telefon","Wichtiger Logistikpartner"]
["K0011","Apotheke am Markt","Jonas Fischer","+49 341 556677","j.fischer@apotheke-markt.de","Marktplatz 1","04109","Leipzig","Deutschland","B2C","Lead","Neukunde","2025-12-05",4,"2026-01-12","",2000,2000,"Sonstiges","Erster kleiner Auftrag"]