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{"year":1972,"nitro":0,"yield":161.5}
{"year":1973,"nitro":0,"yield":211.65}
{"year":1974,"nitro":0,"yield":251.6}
{"year":1975,"nitro":0,"yield":183.6}
{"year":1976,"nitro":0,"yield":120.7}
{"year":1977,"nitro":0,"yield":189.55}
{"year":1978,"nitro":0,"yield":100.3}
{"year":1979,"nitro":0,"yield":121.55}
{"year":1980,"nitro":0,"yield":146.2}
{"year":1981,"nitro":0,"yield":120.7}
{"year":1982,"nitro":0,"yield":131}
{"year":1983,"nitro":0,"yield":49}
{"year":1984,"nitro":0,"yield":122}
{"year":1985,"nitro":0,"yield":58}
{"year":1986,"nitro":0,"yield":98}
{"year":1987,"nitro":0,"yield":119}
{"year":1988,"nitro":0,"yield":33}
{"year":1970,"nitro":3.88,"yield":269.45}
{"year":1971,"nitro":3.88,"yield":272.85}
{"year":1972,"nitro":3.88,"yield":272.85}
{"year":1973,"nitro":3.88,"yield":320.45}
{"year":1974,"nitro":3.88,"yield":385.05}
{"year":1975,"nitro":3.88,"yield":294.1}
{"year":1976,"nitro":3.88,"yield":169.15}
{"year":1977,"nitro":3.88,"yield":285.6}
{"year":1978,"nitro":4.65,"yield":289}
{"year":1979,"nitro":4.65,"yield":233.75}
{"year":1980,"nitro":4.65,"yield":289.85}
{"year":1981,"nitro":4.65,"yield":298.35}
{"year":1982,"nitro":4.65,"yield":291}
{"year":1983,"nitro":4.65,"yield":194}
{"year":1984,"nitro":4.65,"yield":298}
{"year":1985,"nitro":4.65,"yield":224}
{"year":1986,"nitro":4.65,"yield":154}
{"year":1987,"nitro":4.65,"yield":213}
{"year":1988,"nitro":4.65,"yield":163}
{"year":1970,"nitro":7.76,"yield":319.6}
{"year":1971,"nitro":7.76,"yield":351.05}
{"year":1972,"nitro":7.76,"yield":317.05}
{"year":1973,"nitro":7.76,"yield":392.7}
{"year":1974,"nitro":7.76,"yield":496.4}
{"year":1975,"nitro":7.76,"yield":389.3}
{"year":1976,"nitro":7.76,"yield":207.4}
{"year":1977,"nitro":7.76,"yield":329.8}
{"year":1978,"nitro":9.3,"yield":437.75}
{"year":1979,"nitro":9.3,"yield":300.05}
{"year":1980,"nitro":9.3,"yield":346.8}
{"year":1981,"nitro":9.3,"yield":372.3}
{"year":1982,"nitro":9.3,"yield":375}
{"year":1983,"nitro":9.3,"yield":312}
{"year":1984,"nitro":9.3,"yield":410}
{"year":1985,"nitro":9.3,"yield":317}
{"year":1986,"nitro":9.3,"yield":197}
{"year":1987,"nitro":9.3,"yield":280}
{"year":1988,"nitro":9.3,"yield":288}
{"year":1970,"nitro":11.64,"yield":354.45}
{"year":1971,"nitro":11.64,"yield":357}
{"year":1972,"nitro":11.64,"yield":277.95}
{"year":1973,"nitro":11.64,"yield":408}
{"year":1974,"nitro":11.64,"yield":563.55}
{"year":1975,"nitro":11.64,"yield":471.75}
{"year":1976,"nitro":11.64,"yield":213.35}
{"year":1977,"nitro":11.64,"yield":357}
{"year":1978,"nitro":13.95,"yield":473.45}
{"year":1979,"nitro":13.95,"yield":292.4}
{"year":1980,"nitro":13.95,"yield":336.6}
{"year":1981,"nitro":13.95,"yield":375.7}
{"year":1982,"nitro":13.95,"yield":420}
{"year":1983,"nitro":13.95,"yield":380}
{"year":1984,"nitro":13.95,"yield":366}
{"year":1985,"nitro":13.95,"yield":304}
{"year":1986,"nitro":13.95,"yield":205}
{"year":1987,"nitro":13.95,"yield":315}
{"year":1988,"nitro":13.95,"yield":326}