{"C1":1973,"C2":1974,"C3":1975,"C4":1976}
{"C1":2.8,"C2":3.6,"C3":1.4,"C4":2}
{"C1":5.9,"C2":1.7,"C3":0.9,"C4":2.2}
{"C1":3.3,"C2":5.1,"C3":1.1,"C4":0.9}
{"C1":4.4,"C2":2.2,"C3":3.2,"C4":1.1}
{"C1":1.7,"C2":2.1,"C3":0.8,"C4":0.5}
{"C1":3.8,"C2":4.1,"C3":1.5,"C4":1.2}
{"C1":6.6,"C2":4.7,"C3":2.8,"C4":1.4}
{"C1":3.1,"C2":2.7,"C3":1.4,"C4":3.5}
{"C1":0,"C2":1.3,"C3":0.5,"C4":1.2}